Wonderful camping facility for horses and riders. The grounds are clean, mowed, and well-maintained. The staff members are friendly and helpful. The horse stalls are kept in good shape, and I like the fact that they are lit for those "quick checks" at night. Manure pits are emptied often and shavings pits are stocked often, with wheelbarrows available. Shower house was well-lit and clean, with plenty of stalls.
The camp store stocks a lot of great stuff, from saddles and tack to gifts and clothing, plus items you may have forgotten at home. We were there during an "open camping" week so we didn't make use of the mess hall, but I've heard the food is good.
The trails are easy enough for kids and novice riders and well-marked. Even with some heavy rains, most of the ground dried quickly with just occasional muddy sections.
Ideal for gaited horses and stock breeds alike, there is room to "move out" with enough variety of hills and flat areas to keep things interesting. There aren't many points of interest (like overlooks, cliffs, waterfalls, etc) but there are places to stop, tie the horses and take a lunch break. All in all, the trails are very pretty.
With "you are here" signs posted frequently and maps available in the store, it would be almost impossible to get lost in the Hoosier National Forest.
I would recommend MTR if you're looking for a clean, well-run horse campground to visit.