[5] Rockhill is located in southern Huntingdon County on the southwestern side of Blacklog Creek, across from its neighbor, the borough of Orbisonia.

According to the United States Census Bureau, Rockhill borough has a total area of 0.29 square miles (0.75 km2), all land.

Rockhill as it exists today was created by the coal company and the railroad as a support community for their infrastructure.

In the late 2000s the track to the south was rehabilitated to PA 475 sufficiently for speeders to operate and give rides to the public.

In 2022, trackage was restored to the wye at Colgate Grove, with reproduction passenger cars powered by a small diesel locomotive.

On February 18, 2023, their steam locomotive, #16, rode the rails again for the first time since 1956, carrying passengers to Colgate Grove.

Tours inside the East Broad Top shop complex are offered during the summer months.