This is a list of hillside letters (also known as mountain monograms), large geoglyphs found primarily in the Western United States. There are about 600 in total, but the status of many of these symbols are uncertain, due to vagueness in sources. The states with the most hillside letters are: Montana: 86 monograms California: 83 monograms Utah: 83 monograms Arizona: 63 monograms Nevada: 47 monograms Oregon: 39 monograms Idaho: 36 monograms United States Arizona California Colorado At least 25 monograms, possibly 28 Idaho Maryland Montana Nevada New Mexico At least 30 monograms, possibly 37 Oregon Texas 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. Utah Washington Most of Washington's 18 to 19 monograms are in the arid Eastern part of the state. Wyoming Between 24 and 25 monograms Other states More countries Messages are common on the bare mountains surrounding Lima, Peru; most of them are personal graffiti, not community symbols. See also Gozan no Okuribi, Japanese festival involving giant hillside bonfires in the shape of characters Notes External links Mountain Monograms, a website explaining the origins and with an incomplete list and pictures Hillside Letters, a companion website to a book on the subject Letters on Hills, a category on waymarking.com for geocachers Geoglyphs Hill figures in the United States Hill figures in Canada Lists of public art