Cave Divers To Explore Unmapped New Mexico Cavern

by Sean McLachlan on


A crack team of cave divers will explore New Mexico’s famed Blue Hole underwater cave system this weekend.

The Advanced Diver Magazine Exploration Foundation will send a team down Blue Hole cave in Santa Rosa, New Mexico. The cave has already been partially mapped down to a depth of 225 feet, but it’s believed to be much more extensive and the team is carrying equipment allowing them to go as deep as 350 feet.

Every member of the team is an expert cave diver with at least 15 years experience. Each brings their own specialty in biology, survey, photography, cinematography, equipment, logistics, multimedia, or other skills in order to fully document the cave and produce material for a proposed documentary. The ADM team holds records for exploring the two deepest and longest underwater caves in North America with depths below 450 feet and linear passages of over seven miles.

Blue Hole is a popular spot for scuba diving but the entrance to the caves has been barred by a grate for decades due to the deaths of two cave divers who were exploring the system.

Cave diving is a dangerous sport that requires extensive technical knowledge and physical endurance. While I enjoy caving and will happily go to Iraq and Somaliland on vacation, you won’t see me cave diving. It’s too hardcore for me. Best of luck to the ADM crew!

Mapping An Unexplored Cave

by Sean McLachlan on

Want to be an explorer? Want to see places nobody has ever seen? You have three options: become an astronaut, become a deep-sea diver or become a caver.

The first isn’t going to happen for a man my age and the second is expensive, so it’s a good thing I live in one of the best regions in the world to do the third. Cantabria in northern Spain has a large amount of karst, a type of stone that often has caves.

One of them is Luna Llena (“Full Moon”), which has yet to be fully mapped. In my fourth caving expedition in Spain I was part of a team that went to look for new passages. I was thrilled. Seeing unexplored parts of the subterranean world was one of the reasons I got into caving. I didn’t think the payoff would come so quickly.

Luna Llena is at the bottom of an abandoned galena mine from the 1920s. The miners were blasting with dynamite one day and opened up a hole into an unknown cave. It’s been regularly explored ever since but there are still many blank spots on its map.

The mineshaft slopes sharply down into the bedrock. Walking along an old narrow-gauge track past ore wagons and rusted equipment, we soon arrived at the cave. There were four of us, two experienced cavers who would be doing the bulk of the mapping, myself, and another relative newbie named Nacho. I quickly discovered that this would be the toughest cave I’d faced in any country.Karst often forms narrow, deep passageways, the product of underground streams cutting away the stone. These passageways can be five, ten, a hundred meters high. There’s no real floor, just a gradual narrowing until you reach water at the bottom. The only way to traverse these is a technique called “chimneying,” in which you straddle the passage with a hand and a foot on each wall. If it gets a bit too wide you press your feet against one wall and your back against the other. You keep tied into a rope running along the wall so you don’t risk falling into the abyss.

This workout led to a payoff – a low chamber filled with soda straws, thin little tubes hanging on the ceiling that eventually form stalactites. We had to crawl on our hands and knees below these beautiful formations for several minutes before getting to a place where we could stand up.

A little more exploring brought us to a long, high passageway. Several small tunnels led away from it, several blanks on the map. We picked one and crawled inside.

This is where it really got interesting. We were off the map in a place nobody had ever seen. Sadly I didn’t have my camera. My Instamatic died the previous week and I wasn’t going to risk my SLR in these conditions. Nacho brought his, but since he was behind me the only shots he got of me were of the bottom of my boots. The tunnel was too small for anything else.

It was almost too small for us to move. Crawling along in a military low crawl, the tops of our helmets scraping against the roof, we came to a spot where the tunnel pinched.

One of the more experienced cavers turned and looked at me.

“You sure you want to do this?” she asked. “Stop and think about it.”

“Of course I want to do it.”

“You’re not claustrophobic?” she asked.

“If I was claustrophobic I would have started freaking out ten meters ago.”

She shrugged and wormed her way into the tunnel. I gave her time to get through and then went in myself. The only way to enter this part was to have both arms stretched out ahead of me. Even then my shoulders barely made it through. I edged my way forward with my forearms and feet, the tunnel pressing in on all sides. Breathing became difficult. There wasn’t enough room to inhale fully, but I was exerting myself and needed the air. Every move was an effort. I wondered if I would make it through. I didn’t panic, though. My only worry was that Nacho was going to have to grab my boots and haul me out.

Any lingering doubt that I have claustrophobia was snuffed out when my headlamp suffered the same fate. An outcropping in the rock hit the power button and the tiny space I was in plunged into darkness.

It didn’t matter. I hadn’t been seeing anything but the rock an inch in front of my nose anyway. Continuing by feel, I made it to a slightly wider part of the tunnel where I could bend my arm and switch on my light. Ahead of me was an even tinier tunnel turning at an acute angle. The caver ahead of me called back.

“Come on through. It’s like a second birth!”

The birth canal I actually had to push off with my legs and force my body through. I exhaled, crushing my chest as flat as it could go. My head and arms emerged in a little cyst in which sat two of our team. Another push and my shoulders made it. A final effort to get the stomach through, swearing all the way to give up beer. I felt the cave walls pressing against my stomach and the small of my back and then I let out a tremendous fart. The cave literally squeezed it out of me.

Poor Nacho. He was right behind me and had nowhere to run. I hoped he didn’t asphyxiate. He was my ride.

We all gathered in the cyst, Nacho looking a bit green around the gills. During all this time our more experienced leaders had been mapping the passageway. Now we got a chance. This was basic mapping, with a compass, tape measure, and clinometer. It was meticulous work in cramped conditions, yet highly rewarding. All my life I’ve studied maps, especially old ones with their tempting blank spots marked Terra Incognita. And now here I was in Subterra Incognita.

I studied every fissure and formation, hoping to find another passage branching away form the one we were in. None were wide enough to push through. The tunnel soon turned back and rejoined one of the main mapped passageways. We’d mapped maybe a couple of hundred meters. In the annals of discovery this is a very minor footnote. I didn’t care. It made all the scrapes and bruises worth it.

So if you want to be an explorer, consider caving. It’s not as hard as you think. I’m 43 years old and only moderately fit. Chances are you can do what I do. If you live in the U.S., the best way to get into it is to join the National Speleological Society. With more than 10,000 members and about 250 local chapters (called “grottoes”), there’s probably a group near you.

Springtime In Green Spain: Time To Get Out Into The Countryside, And Under It!

by Sean McLachlan on


Green Spain has finally emerged from a miserable winter into a glorious if unreliable springtime, so it’s time to get out and enjoy the region’s natural beauty.

The northern coastal strip of Spain consisting of Galicia, Asturias, Cantabria and the Basque Region has the best outdoor and underground adventures the country has to offer. Its combination of scenic hikes and extensive caves is thanks to the predominance of karst, a type of stone the weathers quickly with water. As you can see from the picture above, rain turns exposed karst into strange, picturesque shapes. When water flows underground it carves out long caves.

One of the best places to see this at work is the Parque Natural de Collados del Asón in Cantabria. Less than an hour’s drive from both Santander and Bilbao, this 11,700-acre natural park is cut through by the Asón River and several smaller streams. Those and the frequent rainfall have scoured the terrain into a series of gorges and cliffs. A network of trails provides lowland rambles past traditional farmhouses and challenging climbs up to rugged and snowy peaks. The dark mouths of several caves beckon to you from the trailside, but these aren’t places to explore without training and preparation.

The weather was glorious the day we went. When you have a fine day here in the north, you get outside. Luckily, you don’t need good weather to get some exercise. The next time I went out we were pelted with a chilly northern rain, perfect conditions to explore Green Spain’s other outdoor attractions – its caves.

Caving is big here, with several organizations and adventure travel companies ready to show you the ropes. And for many caves, ropes are what you’ll need. As water cuts through the stone, it often finds fissures and plunges downwards, gradually widening them into vertical shafts. Rappelling into Stygian darkness is one of the best thrills caving has to offer.

One cave where you don’t actually need ropes is Cotera Cave, not far from the famous prehistoric painted cave of Altamira, 20 minute’s drive outside of Santander. The entrance isn’t terribly inviting – an almost invisible trail snarled with brambles leads to a low opening where cows take shelter from the rain. Cows, being cows, have left more than their hoof prints behind.

%Gallery-186970%Picking out way past the cow patties we turned a corner and entered a large chamber. Sadly, the walls were covered with graffiti. The vandals weren’t very adventurous, though, and we soon left their ugliness behind.

Cotera is a wet cave. For much of the route we sloshed through ankle-deep water as more dripped on us from above. This action creates the formations that make caves so alluring. Cotera appears to be a fairly young cave since there aren’t many large stalactites or stalagmites. Instead, we had baby formations in the form of soda straws, which with enough water leaving mineral deposits on them will eventually grow into stalactites.

At times, the cave narrowed down into tiny crawlspaces we had to worm our way through. Often these shafts took lung-crushing right turns or plunged down at 45 degrees so that we scooted down slick clay into a welcoming puddle. In this sport a “taste of adventure” tastes like wet clay, and the grit gets stuck between your teeth.

Once the cave had covered us in grime, it decided to wash us off by making us crawl along an underground stream with a low roof. There was no choice but to get on our hands and knees and splash trough chilly water. We spotted a couple of underwater passageways leading off into the unknown.

We let them stay a mystery. Cave diving – a combination of spelunking and scuba diving – is extremely dangerous and best left for the truly crazy.

[Photo by Sean McLachlan]

Green Spain: Exploring Iberia’s Celtic north

by Sean McLachlan on


When people think of Spain, they tend to think of a sun-soaked, dry land with a hot climate and beautiful beaches. For the most part that’s true, but Spain’s northern region is very different and equally worth a visit.

Spain’s four northern provinces are often called Green Spain. From west to east, Galicia, Asturias, Cantabria, and the Basque Country are a verdant strip between the North Atlantic/Bay of Biscay and a chain of mountains that traps the rain. Lush, with a mild climate and rugged coastline, it feels more like the British Isles than Iberia. Indeed, the old Celtiberian culture that existed before the Romans has survived more here than in the rest of Spain. You can even drink cider and listen to bagpipes!

I’ve covered the Basque region in my series Beyond Bilbao: Hiking through the Basque Region, so let’s focus on Green Spain’s other three regions.

Cantabria is the smallest region of Green Spain, but packs in a lot of fun. Santander is the main city. I’ve been here for the past three days lounging on the beach with my wife and kid. The weather has been warm but not too hot, and the water cold but bearable. I actually prefer these beaches to the jam-packed tourist hellholes of Benidorm and spots on Costa del Sol in the south. Fewer drunken Englishmen, more space. More risk of rain, though, which is why I’m inside today talking to you folks.

%Gallery-127797%Like the rest of Green Spain, Cantabria has a rugged coastline you can follow on a series of trails. Jagged rocks break the surf while far out to sea you can watch freighters and tankers sail off for distant lands. Picturesque lighthouses dot the shore at regular intervals to keep those ships safe, like the one on Cabo Mayor pictured above, an easy stroll from Santander. The currents and tides make this and the Basque Country good spots for surfing, but wear a wetsuit!

If you go inland you can hike, ski, and rock climb in the towering mountains, many of which reach higher than 2,000 meters. Lots of little villages lie nestled in the valleys, where you can sample local produce and relax at outdoor cafes watching the clouds play over the peaks. Prehistoric people were attracted to this region too. The Basque Country, Cantabria, and Asturias have dozens of caves with prehistoric paintings dating back as much as 20,000 years. The most famous is Altamira, which is temporarily closed to visitors, but many more caves are fully open. There’s something deeply moving about standing in a cool, dark chamber and playing your flashlight over some paintings of bison and shamans left by your distant ancestors.

Asturias is bigger than Cantabria and famous for its cider. Alcoholic cider, that is. Personally I think Asturian cider is the best anywhere, and there’s some tough competition in England and Galicia! Many brands of Asturian cider are only available in Asturias. I can’t even get them in Madrid. The Asturians claim that cider doesn’t travel well over the mountains, but I think they’re just keeping the best for themselves!

Galicia is a bit different than the rest of Green Spain. Sticking out from the northwest corner of the Iberian Peninsula, it gets the full blast of Atlantic winds. It’s even more rugged, with more amazing views. A big draw here is the Santiago de Compostela, where the Cathedral of St. James has been a pilgrimage center for more than a thousand years. It’s the destination of the Camino de Santiago de Compostela (Way of St. James) a network of pilgrimage routes across Green Spain. Some trails start as far away as France, and they all join together eventually to make their way to this holy cathedral where St. James is said to be buried.

Hiking is big in Green Spain. If you don’t want to walk all the way from France to Galicia, there are plenty of shorter trails and day hikes. If you’re more interested in what’s under the land than on top of it, the Picos de Europa in Asturias and Cantabria have some of the best caves in the world. I’m not talking about the homey caves of prehistoric Spaniards, but massive labyrinthine networks of tunnels reaching more than a kilometer into the earth. If you’re not a dedicated spelunker, take heart. Every guidebook lists “show caves” you can go to with the kids.

This is just a quick overview of what northern Spain has to offer. You’ll be getting more from me in coming months about this fascinating region because we’re moving up here in September. If you have any specific questions, drop me a line in the comments section and I’ll try to turn your questions into day trips and posts!

Massive Cave Discovered in Vietnam

by Kraig Becker on

A massive cave discovered in a remote region of Vietnam has been explored for the first time, and is now believed to be amongst the largest in the world. With its main chamber stretching nearly 500 feet in length, and soaring to an unbelievable 650 feet in height.

The cavern is called Hang Son Doong, which means “mountain river cave” in Vietnamese, and was first discovered back in 1991, but was not explored until recently, when a 13-man spelunking team from the U.K. went inside for the first time. The team used a high tech laser to plumb the length and depth of the cavern, and based on preliminary results, they now believe that the cave reaches a height that is at least twice as tall as the largest previously known cave.

The expedition trekked six hours through the jungle to reach the cavern, then spent five days exploring it. In order to reach the massive main chamber. they had to rappel down into a side chamber, cross two underground rivers, and then negotiate several passages. Their cursory survey revealed that the cave system is more than 4 miles in length, but the team believes that there is much more yet to be discovered, and they’ll return later in the year to more thoroughly investigate its depths.

While this cave is genuinely an amazing find, and the height of its main chamber may be the largest yet discovered, it pales in comparison to a cave called Gua Nasib Bagus in Malayasia, whose main chamber streches 2300 feet in length. The king of caves remains Mammoth Cave system in Kentucky however, as it streches at least 365 miles in length, with more passages being discovered all the time.

[via the Outside Blog]