The Yankee Canyon County Road A-25 Subsidence Mitigation Project is located approximately 9 miles northeast of Raton in Colfax County, New Mexico. There are several small subsidence features found in the travelled way of County Road A-25 (A-25) and three known abandoned mine adits near A-25 (Sheet 3 and 4). The project area is undermined by the Turner-Urtado Mine and the Denton Mine. The Turner-Urtado Mine shows a portion of the mine workings below the subsidence features along A-25, and the Denton Mine workings explored through a known abandoned mine adit undermine A-25 (Sheet 3). A-25 is an unpaved road with steep grades and switchbacks. The road surface is exposed bedrock in some locations, and dirt with a gravel overlay in others. The site is steeply sloped and rocky with dense stands of scrub-oak, making access to areas adjacent to A-25 difficult. The project area (Sheet 2) is partially on private land and partially on State of New Mexico land.
