This video shows you that there are basically three types of cliff: those made of soft rock,
those made of hard rock, and
those made of alternating layers of hard and soft rock...
Playing time: 8 minutes. (For hints on using videos click here.)
This video shows you that there are basically three types of cliff: those made of soft rock,
those made of hard rock, and
those made of alternating layers of hard and soft rock...
