I have not completed this hike but information at the visitor center made it clear that it was not a good hike for a three year old. Aspen Overlook Forest Trail - This trail is only .8 miles round trip but is a bit strenuous. The first half of the hike is down into the canyon - and the return trip is straight back up again. There are no ruins visible from this trail but the various kinds of vegetation growing side by side in this area make it quite interesting. This trail is not for strollers or wheelchairs.
Camping is free here.
The campgrounds were very nice a few years ago when I paid a visit to this park. On this visit the campgrounds were closed for repairs. Fortunately, there is also an overflow area above the park and we were able to camp. The overflow areas are more rustic than the regular camp grounds - but we were quite satisfied with our site and enjoyed our stay. Water is available at the visitor center.