Take a walk through the town during it's booming mining days.
Ghost" guided tours available 11:00am, 1:00pm and 3:00pm seven days a week.
When we went there about 25 years ago, Ashcroft was at the end of a long dirt road up a pretty valley. The town consisted of half-a-dozen or so log buildings, including a nicely preserved hotel. But that was it -- no visitor information, no guides, no anything else. Scenic, and something to do, but unless it's been developed there's not much to do besides look at it and go home.
Apparently you can arrange a guided tour: http://www.allaspen.com/attractions/ashcroft_ghost_town.php