FYI: new Montana rock guide: The Big Empty
The Big Empty by Ron Brunckhorst.
http://thebasecamp.com/2015/04/new-loca ... big-empty/
"The Big Empty is a select climbing guide to central Montana to include the Little Belts, Big Belts, Castles and much more. Check out favorite climbs in Hellgate, Avalanche, Indian Creek, Trout Creek and Beaver Creek."