Experience the underworld as we explore local caves and crevices. Not far from Rexburg are numerous opportunities to see extinct lava tubes. We will provide headlamps, helmets and transportation, your adventure starts here. Remember, all mountain bike adventures are for current students and or their spouses only. A detailed email providing meeting location, time and other essential items will be sent no later than the night prior to the activity. Please purchase tickets through the BYUI Ticket Office in the bookstore or online. Tickets: www.byui.edu/tickets Cost: $5.