This high point rises abruptly above the Big Sandy River valley near Hackberry Canyon, and is edged on the eastern side by a raised alluvial plain.

The peak stands out due to its honey-gold and pinkish white colors which contrast with the surrounding local terrain.

The peak is part of a pluton composed of early Middle Proterozoic granitic rocks (1400–1450 Ma) from the Calymmian Period.

Wegner Peak is mostly porphyritic biotite granite with large microcline phenocrysts, with local fine-grained border phases and aplite.

[6] The Big Sandy River bends around the mountain cutting through Hackberry and Signal Canyons approximately 500 feet (152 m) below the peak.