CSU Mountain Campus is situated in Pingree Valley in the Mummy Range at 9,053 ft (2,759 m) approximately 24 miles (39 km) from the city of Fort Collins, Colorado.

CSU renamed the park around controversial accusations of George Pingree being involved in the Sand Creek Massacre.

Many groups use the facilities, including students from both Colorado State University and Poudre School District.

NR-220 is a required four-week field camp for undergraduate students in the College of Natural Resources.

Koenig spent the winter with the Ramsey family and helped build a road over Pennock Pass.

Hugh Ramsey moved to the upper ranch and sold to Frank Koenig most of the property except for 40 acres (160,000 m2) which he gave to Hazel as a wedding present.

In 1919, Frank and Hazel Koenig's twin infants died of whooping cough while the family was snow bound.

In addition to the many structures that still stand of the original ranch community, the Koenig's retain their legacy in the region through many geographical names.

Frank Koenig was selected as one of the initial three park rangers and went on to name many of the surrounding geographic features.

A functional campus was erected quickly with the first building completed in 1913 to serve as bunkhouse, cafeteria and classroom.

The campus expanded slowly with a bunkhouse built in 1927 (now the present day Store and Recreation Area) and smaller buildings being constructed for faculty and daily operation.

Forestry and Natural Resource students have been in attendance every summer with the exception of several years during World War II.

[4] On April 6, 2015 Pingree Park was renamed Colorado State University Mountain Campus.

Additionally, the name change was a conscious effort to separate the Mountain Campus and its land-grant mission from George Pingree.