When the clay becomes wet it swells, forming a mound, and the rocks which were pushed (or pulled) to the surface will roll downhill under the influence of gravity (Masson, 1949;
(the clay; becomes; wet) (the rocks which were pushed (or pulled) to the surface; will roll; downhill; L:under the influence of gravity) (it; swells; T:When the clay becomes wet) (the rocks; were pushed; to the surface) (the rocks; pulled; )
the clay the rocks which were pushed (or pulled) to the surface it the rocks the rocks
becomes will roll swells were pushed pulled
wet
downhill L:under the influence of gravity
T:When the clay becomes wet
to the surface