Mountain ability

https://ewscripps.brightspotcdn.com/dims4/default/b5dba0d/2147483647/strip/true/crop/0x0+0+0/resize/1280x720!/quality/90/?url=http%3A%2F%2Fmedia.thedenverchannel.com%2Fphoto%2F2015%2F07%2F27%2Fcurving%20tunnel_1438042415472_22054779_ver1.0_640_480.jpg 13 Secrets Of Norad And Cheyenne Mountain

https://www.gateworld.net/wiki/images/8/8c/Cheyennemountain.jpg Cheyenne Mountain The Stargate Omnipedia