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 the face of {HEAD ~ 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 the face of { HEAD ~ 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 OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD