Henry Mountain? Granite
Granite. Paleoproterozoic, about 2,500 to 1,600 million years old. 2 crags on this site have their map point on it.
What the map says
Medium-gray to grayish-pink, coarse-grained, massive to strongly foliated monzogranite and granodiorite; locally porphyritic, with potassium feldspar phenocrysts as long as about 3 cm. Strongly resembles Elephant Rock Granite east of Arkansas River, but U-Pb zircon ages from two sites are 1,672±5 Ma (ID-TIMS age of Bickford and others, 1989) and 1,709±6 Ma (Moscati and others, 2017). Henry Mountain Granite (1,711±9 Ma; Moscati and others, 2017) near Gunnison is compositionally, petrographically, and isotopically very similar. Due to similarity to Elephant Rock Granite, contact between the two units has not been identified and is very approximate (indicated by queried contact). Similar rock tentatively interpreted as Henry Mountain Granite is also mapped in southwestern corner of map area, north and south of South Fork Arkansas River
1:100,000 sheet: Kellogg and others, 2017, U.S. Geological Survey Scientific Investigations Map 3382 (2 crags). A contact line at that scale is about 100 m wide on the ground.
Served by Macrostrat (CC BY 4.0). The wording is the map's own, quoted as a fact about the mapped unit, not about any one wall.