This new tower structure near the Area 51 RCS range was built between September 28, 2005 and January 17, 2006.
The tower is 190ft. tall, with a triangular cross-section. Each side is approximately 32ft. long. The tower sits on a 37ft. diameter turntable, which apparently allows it to rotate around its vertical center axis. It may hold a new radar array for RCS tests or other radar measurements.
The tower has line-of-sight to a newly expanded remote facility near N37° 14' 32" and W115° 53' 24". That facility in turn has several tall poles, although not as solid. The remote facility was expanded around the same time our tower was built, so there may be a connection.
The structure looks somewhat similar to the ICECAP tower at the Nevada Test Site, without the siding. Because of the proximity to the NTS, and the fact that the towers there are no longer used, it may be a re-used tower originally designed for underground nuclear tests.