page_title: Area 25 (Nevada National Security Site)
section_title: Current activities
hierarchical_section_title: Area 25 (Nevada National Security Site) / Current activities
caption_attribution_description: English: Nevada Test Site. A-25 X-Tunnel.
context_page_description: Area 25 is the largest named area in the Nevada National Security Site at 254 square miles, and has its own direct access from Route 95. Area 25 is commonly called "Jackass Flats" because it is composed primarily of a shallow alluvial basin by that name.
  It was originally known as "Area 400", and was renamed "Area 25" circa 1970.
  No nuclear explosions took place within Area 25.
context_section_description: Portions of Area 25 are used by the military for training exercises. The U.S. Army Ballistic Research Laboratory conducts open-air and X-tunnel tests using depleted uranium.
  On July 8, 2010, it was announced by Harry Reid, Steven Chu and Ken Salazar that a 25-square-mile (65 km²) portion of this area was being reassigned as a development and test area for new solar technologies.
  One of the test stand of Area 25, the Reactor Maintenance, Assembly, and Disassembly (R-MAD) facility, has been demolished. The non-radiologically contaminated portions of the facility were demolished in late 2005. Demolition activities for the radiologically contaminated portions of the R-MAD Facility were initiated in October 2009 and completed on
  July 15, 2010.
caption: X-Tunnel in Area 25.
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