'Volunteering at state and federal park

I my part of the Front Range of Colorado there are several opportunities to volunteer both for the USFS and the Colorado State Parks. Most of the positions are strictly volunteer and there is no pay involved. Some of the positions would be to man forest service camps that are no longer used for that purpose but are rather historic places for visitors in those areas. Others may be visitor centers and are usually historic places that are use as information centers and provide information about the surrounding areas. There are generally facilities for RV parking and utilities are provided.
A great way to meet interesting people and learn about the surrounding area.