
Peters Mountain and a series of parallel ridges dominate this late-twentieth-century landscape, defined by the heavy presence of the Indiantown Gap Military Reservation and sprawling state-managed lands. In the south, the village of Grantville sits near the Penn National Race Course and a golf course, marking the transition from agricultural valley floor to the steep, wooded slopes of the Blue Mountain range. The ridges are separated by deep valleys carved by Stony Creek and Clark Creek, with the large De Hart Reservoir filling the gap between Peters and Rush Mountain.
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1892 · Lykens
USGS Topo · 1:62,500
1892 · Hummelstown
USGS Topo · 1:62,500
1892 · Harrisburg
USGS Topo · 1:62,500
1893 · Lykens
USGS Topo · 1:62,500
1893 · Millersburg
USGS Topo · 1:62,500
1899 · Harrisburg
USGS Topo · 1:62,500
1924 · Hummelstown
USGS Topo · 1:62,500
1924 · Harrisburg
USGS Topo · 1:62,500
1943 · Millersburg
USGS Topo · 1:62,500
1943 · Lykens
USGS Topo · 1:62,500