(additional fee/no min age/from 12-100 participants): This is a classroom unlike any you have ever seen before. This super long cargo trailer has been converted into an underground mole tunnel that you can walk through. As students walk through the trailer, they will notice giant worms, root systems, and different microorganisms that demonstrate just how alive soil is. The folks who came up with this cool contraption then take students through a series of lessons that help dive deep on the topics of soil health and conservation. And coolest of all, the trailer is completely handicap accessible so that everyone can join in the fun. This activity costs an additional fee of $290 for four, 1.5-hour sessions to directly support the Underground Classroom.