The Henry Mountains dominate the northern horizon of this landscape, casting their influence over a network of high-elevation plateaus and drainages. The topography is defined by the broad Indian Spring Benches and Copper Creek Benches, which transition into a series of distinctive landforms including Johns Knoll, Juds Knoll, and the sharp prominence of the Black Cockcomb. Water is the primary architect here, with ephemeral systems like Shitamaring Cr and Lost Spring Wash carving deep into the earth, supported by vital points such as Indian Spring and Star Spring. In the northeast, Milk Cr Reservoir and the drainage of Milk Cr indicate localized water management efforts in this arid territory. The lone modern artery, Ut-276, cuts across the southeastern corner, providing a singular point of access through this complex terrain of ridges and washes.
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1886 · Henry Mountains
USGS Topo · 1:250,000
1892 · Henry Mountains
USGS Topo · 1:250,000
1952 · Mt Pennell 1 SW
USGS Topo · 1:24,000
1952 · Mt Pennell 2 NE
USGS Topo · 1:24,000
1952 · Mt Pennell 1 NE
USGS Topo · 1:24,000
1952 · Mt Hillers
USGS Topo · 1:62,500
1952 · Mt Pennell 1 SE
USGS Topo · 1:24,000
1952 · Mt Pennell 1 NW
USGS Topo · 1:24,000
1953 · Mt Pennell
USGS Topo · 1:62,500
1953 · Mt Pennell 2 SE
USGS Topo · 1:24,000