Indoor Rock Climbing Wall Options Offer Varied Experiences Indoor rock climbing wall options consist mainly of three types: Boulders, Towers and Ice walls. All are challenging and all require the climber to have patience, concentration and physical strength. The differences lie mainly in how each type of wall is used. Read on so you can decide which of the indoor rock climbing wall options are right for you. Boulder walls are so named because they are made to closely resemble the types of boulders you'd experience if you were to rock climb outdoors. They're irregularly shaped, covered with holds and crevices and some even include overhangs, outcroppings and caves. This rock climbing wall option gives the climber an opportunity to do more than just climb up and rappel down. They might even find themselves climbing along on the underside of a boulder or hanging from a ledge. Towers are just that. They're typically flat panels covered with holds that you climb up and rappel down, over and over again. This indoor rock climbing wall option is great for those learning the basics of rock climbing and anyone looking for a great workout. Towers can range in height from 8 feet to higher than 30 feet! Tower walls are typically what mobile rock climbing companies use because they're easy to set up and they provide hours of entertainment.