I need some good name ideas for a homeschool facility. Could you help me?

Basically, we are turning a large basement into a homeschool facility where homeschoolers can meet, teach classes, etc. It will have a raised platform on one end (for performances and whatnot), a kitchen, and a library.

The only thing that’s missing is a good name for the place. It should be…

· Fun
· Playful
· Academic
· Possibly referencing something underground. i.e. Den, Cave, Cove, etc.

Take it away, Fluther!