Directions: You can get to the park by taking US 30 from Ligonier east for two miles to the intersection of PA381. Turn south for two miles and turn left on to Linn Run Rd at the town of Rector. Once in the park turn right into Grove Run picnic area. One again print out the map because the trails also go ot Forbes State Forest so try not to get lost.
Here is a small list of the other trails:
Adams Falls Trail, 1 mile, rocky and passes by a waterfall
Iscrupe Trail .75 miles, follows a old road
Flat Rock Trail: .5 miles, goes to a big flat rock in the stream
Description: Grove Run Trail is a 4 mile loop that gets your blood pumping with a steady climb at the start. The picnic area has a stone fountain with spring water and last I heard it is very drinkable. Along the trail you should be able to see: Grove Run waterfall, a view of Linn Run Valley, and lots of moss covered rocks steraming with water.
I hope to get some pictures on my next visit here.