Passage: The USGS topographic map for the area only shows the long-disused Groom Mine. A civil aviation chart published by the Nevada Department of Transportation shows a large restricted area, defined as part of the Nellis restricted airspace. The National Atlas page showing federal lands in Nevada shows the area as lying within the Nellis Air Force Base. Higher resolution (and more recent) images from other satellite imagery providers (including Russian providers and the IKONOS) are commercially available. These show the runway markings, base facilities, aircraft, and vehicles.

Question: What type of airspace is Nellis?
restricted