Presidio County, Texas
30 16.544' N 103 52.922' W
Directions: Start at the intersection of Nopal Road and SH-90. Go 2.7 miles east on SH-90. The marker is on the right (south) side of the road.
Text: The Marfa Lights, mysterious and unexplained lights that have been reported in the area for over one hundred years, have been the subject of many theories. The first recorded sighting of the lights was by rancher Robert Ellison in 1883. Variously explained as campfires, phosphorescent minerals, swamp gas, static electricity, St. Elmo's fire, and "ghost lights", the lights reportedly change colors, move about, and change in intensity. Scholars have reported over seventy-five local folk tales dealing with the unexplained phenomenon.