Cerro Pedernal, Mountain summit in northern New Mexico, United States.

Cerro Pedernal is a narrow, flat-topped mesa in Rio Arriba County, northern New Mexico, rising to 9,866 feet (3,007 m) on the north flank of the Jemez Mountains, south of Abiquiu Lake. Its basalt-capped summit sits above steep cliffs, and the peak marks the boundary between the Colorado Plateau and the Rio Grande Rift.

Cerro Pedernal is the source of a chert used by the prehistoric Gallina people, who harvested the stone from its slopes. The Tewa name Tsee Pʼin means 'obsidian mountain', and the Cochiti name Hésrt'e'yanyik'óthe also refers to obsidian, showing the peak's long association with stone tool material.

The mountain's flat-topped outline appears in many paintings by Georgia O'Keeffe, an artist who lived nearby and found deep meaning in this landscape. The shape itself became central to how people understood her artistic vision and approach to nature.

Reaching the summit requires advanced climbing ability due to steep rock sections where hands and feet are both necessary for safe passage. The ascent works best during cooler months when conditions are more comfortable and visibility extends across the surrounding landscape.

From the summit, views reach toward distant Colorado peaks and the Jemez Mountains, but most notably, Georgia O'Keeffe's ashes were scattered at this highest point. This personal connection transforms the place into a meaningful destination for those drawn to her artistic legacy.