One of the most fascinating attractions in the area is the Olduvai Gorge, where an old river has carved away the rock to expose layer upon layer of volcanic soil.
(One of the most fascinating attractions in the area; is; the Olduvai Gorge) (an old river; has carved; away; the rock; to expose layer upon layer of volcanic soil) Context(an old river has carved,List([80, 103))):(an old river; has carved to expose; layer; upon layer of volcanic soil)
an old river has carved,List([80, 103))
One of the most fascinating attractions in the area an old river an old river
is has carved has carved to expose
the Olduvai Gorge
away the rock to expose layer upon layer of volcanic soil
layer upon layer of volcanic soil