Yucca Mountain

Yucca Mountain is a mentioned only location.

Background
Mr. RADical mentions Yucca Mountain in his journal, explaining that he visited the location overnight to test out the effectiveness of his new radiation suit. He believed that even with high levels of radiation, the test was a success as he didn't feel any adverse effects. Despite the proclaimed success, he did not end up going very deep into the facility as he thought he saw something large moving inside the tunnel.

Appearances
Yucca Mountain is mentioned in Fallout: New Vegas.

Behind the scenes
Yucca Mountain is based on the real world location of the same name. There were plans to create a nuclear waste repository within the mountain that never came to fruition.

Reference
Monte Yucca Гора Юкка