You'll have to check their website for the hours for when it's open, but some tips.... Get there early, take water, it's a bit of a hike so be mindful of that. The ladder into the cave is about 6 stories high, but you get harness and roped up and we felt completely safe. There was a family with young kids in our group, maybe 7-9 years old. You will get helmets and headlamps. I wouldn't recommend it if anyone is claustrophobic. There are a couple tight spaces. The footing can be a little slippery. You'll want to use your hands for support but the rocks have a lot of bat guano. So take hand sanitizer, maybe even surgical gloves....and no bathrooms. And btw, we loved it, so by all means,given the above info, go if you can!

Hello, the cost to enter the national park is $ 12 and for the guide to go to the cavern are $ 29. But the time to visit the cavern is from 8:00 am to 12:00 noon, during the afternoon there is not service, for safety

Peter: just saw your msg. Barra Honda is 1/2 an hour from the town of Nicoya (Nicoya is bigger than most smaller towns. Smaller than Liberia and San Jose but bigger than samara) there are many private lodges, B&B's , hotels and accommodations around Nicoya). We stayed in Samara which is very close to Nicoya and has many many available accommodations. They have a very nice hostel as well and the beach is beautiful.

No children under the age of 12 are allowed to visit the Terciopelo cave. There is another cave suitable for children.

Hello, what did you discover about the cabins in the park? I am having trouble getting details, too. Do you have advice? Are they available?

No its not essential but if you plan to go caveing then yes as you give the guides a lift from the ticket office, further into the park. The road is tarmac up to a certain ammont then gets rougher but a any car can go use it. I hope this has been helpful as they say in costa rica Purta Vida