Timpanogos Caves may only be entered with a guided tour. Cave tours are offered daily throughout the summer season and are led by park rangers. Cave tours are 55 minutes long and are limited to 16 people per tour. We recommend that you purchase cave tour tickets before your visit online or by calling 1(877) 444-6777, using your credit card. Advance tickets may be purchased up to 30 days prior to your visit. Visitors arriving without advance tickets often wait several hours before beginning their tour or are turned away because all tours for that day are sold. See Fees and Passes for more information.