for the continuation of the range in Nevada
The Castle Mountains are located south and east of the New York Mountains

New York Mountains

The New York Mountains are found in northeastern San Bernardino County in California, USA; the range's northeast lies in southeast Nevada. The range lies just south of the small community of Ivanpah, and north of the Lanfair Valley. The mountains are part of the mountain ranges, cones, mountains,...

 in California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 and west of Cal-Nev-Ari, Nevada

Cal-Nev-Ari, Nevada

Cal-Nev-Ari is a census-designated place and town in Clark County, Nevada, United States, near the state's southernmost point. As of the 2000 census, the town had a total population of 278...

, USA.

The range lies at the northeastern end of San Bernardino County's Lanfair Valley

Lanfair Valley

Lanfair Valley is located in the Mojave Desert in southeastern California near the Nevada state line. It is bounded on the north by the New York Mountains and Castle Mountains, on the east by the Piute Range, and on the south by the Woods Mountains and Vontrigger Hills. Joshua Trees can be found in...

, and reaches an elevation of 5,543 feet above sea level at Hart Peak. The mountains lie in a southwest-northeasterly direction in both states, although most of the range is in California. The Piute Range

Piute Range

The Piute Range is located in the Mojave Desert, primarily in northeast San Bernardino County, California, United States, with a north portion in Nevada...

lies to the southeast.