WHILE WALKING AWAY FROM THE STAIRS AT EH TELESMITH CRUSHER AND APPROX FIVE FEET FROM THE STAIR LANDING STEPPED INTO A HOLE IN THE COMPACTED DIRT. THE HOLE OR DEPRESSION WAS APPROX 2"" DEEP BY 3 "" WIDE. THE HEEL OF THE BOOT WENT INTO THE HOLE WHILE THE REST OF THE FOOT REMAINED AT THE HIGHER ELEVATION OUTSIDE THE HOLE OR DEPRESSION. THE KNEE BENT BACK AND MADE A POPPING SOUND.