In one embodiment, the face mat has a relatively short floor portion for extension into the earthen formation and an upright portion of {TAIL ~ an extended height} for disposition over {HEAD ~ the face} of the formation 
In one embodiment , the face mat has a relatively short floor portion for extension into the earthen formation and an upright portion of { TAIL ~ an extended height } for disposition over { HEAD ~ the face } of the formation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH