The Yellowstone High Adventure Outpost provides a premier High Adventure experience for independent crews and scouts at CBB who are ready for the adventure of a lifetime in the largest contiguous wilderness in the lower 48.

http://www.campbuffalobill.com/program/yellowstone-high-adventure-outpost/

Ma-Ka-Ja-Wan High Adventure Base has been offering Northwoods adventures since 1976.  Whether you are interested in taking in the vistas on foot at one of our four backpacking destinations, paddling through the cool water on our kayaking or canoe treks, or relaxing on sailboats in Lake Superior, there is sure to be a trek for you!  We are excited to announce new treks each summer. If you don’t see a trek that you like, contact the camp staff about a custom itinerary.
We offer both in-camp day trips (that are designed to compliment your stay at Ma-Ka-Ja-Wan) or adventures outside of the regular camp program. We are proud to be a Nationally Accredited High Adventure Base.

www.makajawan.com  

The Salmon River High Adventure Base is  a joint venture between Grand Teton Council and the Mountain West Council.

Idaho's Salmon River, known as the "River of No Return," is one of the most unique in the world. Originating in the mountains of central Idaho, it flows through some of the most beautiful and pristine land in the United States before reaching its confluence with the Snake River. It is a free-flowing river, without a single dam anywhere on the 425 miles of its main steam. It is one of the longest such rivers in the continental United States, second only to the Yellowstone. Also, excepting Alaska, it is the longest undammed river contained entirely in a single state. 
The exact origins of the Salmon's nickname are lost to history. Some credit Lewis and Clark after they turned back, the only obstacle during their entire exploration they retreated from. Others say it was early pioneers who settled along the river as farmers and miners. Whoever first coined the phrase, the name is fitting. On average, the river loses nearly 20 feet of elevation for every mile, making for some intense whitewater. It also travels through the Frank Church-River of No Return Wilderness, the second-largest wilderness in the lower 48. 

https://www.mountainwestcouncil.org/srhab
http://www.tetonscouts.org/salmon-river-program-information/60463

Scott Thiessen, Director for the Zink High Adventure Base (Z-base) discusses the coming 2021 season. 

Jack Zink high adventure base (ZBASE) is a high adventure leadership based program that will be operated by the local Indian Nations Council and serve Boy Scouts and Venture Scouts as well as high adventure enthusiasts on a regional basis. The leadership curriculum will provide an outdoor discovery based classroom designed to develop participants’ leadership skills and learn more about themselves and others in a hands-on, active experience. The programs offered will be unique to not only the area, but to scouting in general. ZBASE will encompass 35,000 acres on Zink Ranch as well as 10,000 acres of Skiatook Lake.
THE PURPOSE OF ZBASE IS THREEFOLD: become the premier regional (and eventually national) high adventure base, help maintain the relevance of the scouting principles to today’s youth, and be seen as a leadership training center. Zink Ranch has a tradition of hosting various scouting activities and is a fitting site for this one of a kind high adventure base.

https://zbase.camp/