Summer Coon is an Oligocene stratovolcano [1] in Saguache County, Colorado that erupted between 24 and 34 million years ago. It is located 6 miles (9.6 km) north of Del Norte, Colorado and is on the western edge of the San Luis Valley. It is in the Rio Grande National Forest. [2]
The New Mexico Geological Society published an article on it in 1971. Various studies of the area and its volcanic intrusions have been carried out. [3] These include a study of trace element variations at the summit. [4] La Ventana Arch resulted from erosion following volcanic activity. [5]
37°46′30″N106°22′04″W / 37.77500°N 106.36778°W