1962-64: A replacement lookout tower was erected on Thorne Point in Columbia County. (4th Biennial Report of the Washington Department of Natural Resources)
March 4, 1970: "Thorn Lookout Station near Dayton, Washington, Umatilla National Forest, was broken into three times. Damage to the structure, maintained cooperatively with the Washington State Department of Natural Resources, and the value of articles was estimated at $460." (Port Angeles Evening News)
National Geodetic Survey
DESIGNATION - THORN LOOKOUT TOWER PID - RZ1694 STATE/COUNTY- WA/COLUMBIA COUNTRY - US USGS QUAD - CAHILL MTN (1995) STATION DESCRIPTION
DESCRIBED BY COAST AND GEODETIC SURVEY 1963 (JCC) THE STATION IS THE TOP CENTER OF THE THORN LOOKOUT TOWER, LOCATED ABOUT 17 MILES SOUTHWEST OF POMEROY, 13 MILES EAST NORTHEAST OF WAITSBURG, 5 MILES EAST SOUTHEAST OF DAYTON, AND 0.15 MILE SOUTH OF A GRAVELED ROAD.
THE STRUCTURE IS A 10 FOOT SQUARE WOOD HOUSE SUPPORTED BY A 4-LEGGED WOODEN TOWER. THE OVERALL HEIGHT IS APPROXIMATELY 75 FEET.