This sounds clearer, it is the translation by http://www.pons.eu:
"The location of a passage grave in connection with the toponym Peyrelevade is found. It was dismantled several centuries ago to serve as building material in a nearby dike. The passage grave measures approximately 6m 50 by 1m 75 and is oriented at 330°. "
Something is not right. This message is just to keep things from messing up down the road