The Wheeler Geologic Area contains a variety of rock formations formed from volcanic tuff. The area was designated a National Monument by Theodore Roosevelt in 1908, and remained so until 1950 when it was abolished and returned to the Rio Grande National Forest. It was expanded and protected in the 1960s, and in 1993 it was designated as a wilderness area. Reaching the area is difficult, but can be done via a long, 4-wheel drive road.

Collection

Rio Grande National Forest

Creation Date

Unknown

Creator(s)

Silver Thread Interpretive Center, South Fork, Colorado

Publication Date

2022-12-15

Language

English

Period

Theodore Roosevelt and Public Memory (1919-present)

Page Count

2

Production Method

Printed

Record Type

Multi-image

Resource Type

Advertisement

Citation

Cite this Record

Chicago:

Wheeler Geological Area. [Unknown]. Theodore Roosevelt Papers. Library of Congress Manuscript Division.
https://www.theodorerooseveltcenter.org/digital-library/o305393. Theodore Roosevelt Digital Library. Dickinson State University.

MLA:

Silver Thread Interpretive Center, South Fork, Colorado. Wheeler Geological Area. [Unknown]. Multi-image. Theodore Roosevelt Papers. Library of Congress Manuscript Division. Theodore Roosevelt Digital Library. Dickinson State University. October 29, 2025. https://www.theodorerooseveltcenter.org/digital-library/o305393.

APA:

Silver Thread Interpretive Center, South Fork, Colorado.: , [Unknown]. Wheeler Geological Area. Theodore Roosevelt Papers. Library of Congress Manuscript Division.
Retrieved from https://www.theodorerooseveltcenter.org/digital-library/o305393.

Cite this Collection

Chicago:

Rio Grande National Forest. Theodore Roosevelt Papers. Library of Congress Manuscript Division.
https://www.theodorerooseveltcenter.org/collection/rio-grande-national-forest. Theodore Roosevelt Digital Library. Dickinson State University.

MLA:

Rio Grande National Forest. Theodore Roosevelt Papers. Library of Congress Manuscript Division. Theodore Roosevelt Digital Library. Dickinson State University. October 29, 2025. https://www.theodorerooseveltcenter.org/collection/rio-grande-national-forest.

APA:

Rio Grande National Forest. Theodore Roosevelt Papers. Library of Congress Manuscript Division.
Retrieved from https://www.theodorerooseveltcenter.org/collection/rio-grande-national-forest.