To climb Devils Tower, all climbers have to register before climbing. Registration is a legal requirement for anyone planning to climb or scramble above the boulder field and must be done before your climb. It can be completed at the climbing kiosk at the Visitor Center parking lot. Hang on to your return slip as you have to deposit it at the end of your climb. Failure to obtain a permit is subject to citation and fine.
This mandatory registration is free and in the best interests of climbers and the climbing community: it ensures safety, documents use of the Tower as a climbing resource, and becomes part of a historical database.
Another important thing every climber should be aware of is that June is a voluntary climbing closure. Devils Tower is regarded as a sacred site for Native Americans and every June, the park asks visitors to voluntarily refrain from climbing the Tower or scrambling inside of the Tower Trail loop.