This is a list of hillside letters (also known as mountain monograms), large geoglyphs found primarily in the Western United States.[1][2][3] There are about 600 in total, but the status of many of these symbols are uncertain, due to vagueness in sources.
Texas' 16 or more monograms are all in the westernmost mountainous, part of the state. There are six (in various states of repair) in El Paso alone, the most in any single city in the United States.