If you’re feeling the need for a little underground adventure, October is the perfect time of year to visit the Karst region in Slovenia. Ranking as one of the largest underground canyons in the world, Slovenia’s Škocjan Caves stretch for 5.8km at depths of 250m below ground. Why October? Travelers headed this way in the autumn months can skip the summer crowds and take leisurely tours before the unpleasant bitterness of winter sets in.
This rare picture was captured on the sly by Flickr user StrudelMonkey in the Škocjan’s final cavern. Here, visitors can peer at the Reka River which flows just 50m beneath the carefully marked paths. Taking photos isn’t permitted in the caves (hence the blur in the picture), so follow StrudelMonkey’s lead and turn your flash off if you want share your memories with the folks at home.