Located between Bluewell and Bramwell along U.S. Route 52, Pinnacle Rock State Park in Mercer County includes a 3,100 foot tall sandstone rock formation that shares a name with the park.

Pinnacle Rock in Mercer County has a similar ... The main Boardwalk in the park goes through a maze of large boulders and rock formations. The trail is easy to walk and only a half mile.