Scales Mountian bike trail is a 5 mile moderately trafficked loop trail located near Boonville, IN that features a lake. The trail is rated as difficult and primarily used for hiking, camping, horses, and mountain biking. Dogs are also able to use this trail but must be kept on leash.
dogs on leash
http://scaleslakepark.com/index.html 812-897-6200 800 W Tennyson Rd, Boonville, IN 47601
This was a good trail before 2014. Storms damaged a lot of the trees. Even months after, parts of the trail were not open. If the parks dept people restore this trail, it would be a 4 star rating as it has great ups and downs, narrow in areas, technical skills needed.
My parents live in Boonville and I've ran this loop for years when visiting from Colorado. I was very impressed to see that the trail was developed for mountain biking. The land was once a strip mine, so the terrain is strange and perfect mountain biking.