Venado Caves
In 1945 a farmer in the mountain hamlet of Venado fell into a hole, and thus discovered Cavernas de Venado, subterranean limestone chambers extending about 2½ km (1½ miles). If you're not claustrophobic, willing to get wet, and don't mind bats or spiders (think carefully) this could be the ticket for you. Rubber boots, flashlights, and helmets are provided. Bring insect repellent and knee pads but leave your phone at the hotel---it will get wet. If you want to capture the adventure, consider hiring their on-site photographer to follow you through the 10 caves. Lunch is an option here; it must be reserved in advance. Most La Fortuna–based tour companies run trips to Venado Caves for about $90 or you can book directly with the caves for $28.
