Most of highest mountains in Texas are found in which part of the state

Culberson County, Texas

Explanation:

Culberson County, Texas, U.S. Guadalupe Peak, also known as Signal Peak, is the highest natural point in Texas, with an elevation of 8,751 feet (2,667 m) above sea level. It is located in Guadalupe Mountains National Park, and is part of the Guadalupe Mountains range in southeastern New Mexico and West Texas.

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