Complex sentence: Dudley Chase, a grantee, was on a surveying exipediction with a group of men, the men made camp in an area near the (now) entrance to Gilead Brook road where there is a group of large moss covered rocks.
Split into simpler sentences: Dudley Chase, a grantee, was on a surveying expedition with a group of men. The men made camp in an area near the (now) entrance to Gilead Brook road where there is a group of large moss covered rocks.