FLATTOP RM 1 Coordinates: N 34.823567° W 109.820483° Location: Arizona Apache County Agate House Quad Elevation: Unknown Type: Reference Mark Disk Setting: Rock Outcrop Year Established: 1936 Established By: USGS Status: Recovered Condition: Good as of September 19, 2008 View larger map View Google map For more information, see: FLATTOP USGS Reference Mark Disk FLATTOP RM 1 Eyelevel view of the mark on the rock outcrop at the edge of the mesa. View of the general area of RM 1, looking over the edge of the mesa. For more information, see: FLATTOP