MUD RM 2 Coordinates: N 41.11655° W 74.88575° Location: New Jersey Sussex County Flatbrookville Quad Elevation: Unknown Type: Reference Mark Disk Setting: Rock Outcrop Year Established: 1937 Established By: NGS Status: Recovered Condition: Good as of December 27, 2006 View larger map View Google map For more information, see: MUD NGS Reference Mark Disk MUD RM 2 Eyelevel view of disk on rock ledge. Looking SE toward station. For more information, see: MUD