The fee includes access to the grounds as well as the cavern tour. There is also a family amusement area with a lot of additional games, rides, etc for an additional cost. It seems pricey but I believe well worth the cost. My family really enjoyed our time at Desoto Caverns. I believe the park and all of the attractions should be open by April. I would call to verify before you visit.
The fee is to go in the cave... other activities cost extra
That's access to the park , and yes they should be open in april
The Caverns are open year round. I'm unsure about the other activities.
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