In Weh Island there is a lake of fresh water named Lake Aneuk laot.
Pulau Weh is a volcanic island , an atoll island ( coral island ) that the process of occurrence of
experiencing lifting from the sea surface. The
process of occurrence in three stages, evident from the existence of three
terraces located at different altitudes.
Generally Weh Island consists of two types of rocks, namely tuff marina and core rocks . Tuf marina is found almost along the coast until the
height of 40 to 50 meters . The widest tufts are found around the town of Sabang,
on a narrow-lined beach.Narrow rock is a volcanic rock that
is andesitic .
Based on the
region, it appears that the western region of Pulau Weh has the most severe topography. Starting from Sarong Krisas the highest
peak in the East, there are three rows of backs that are heading towards the
Northwest, so the valleys that are between the backs are narrow.
Topography to the
east there is a mountain that direction from North to South that separates East Weh Island with other parts.Mount Leumo Mate is the highest peak. In this section there is a larger layer of tuff marina . Between
the West and the East there is a stream of two rivers , namely Sungai Pria Laot and Sungai Raya . This
area is a slenk of
a fleksun ( an imperfect benchmark).
The geological condition of this region consists of 70% of volcanic rock ( andesite ), 27% of sedimentary rock ( line stone and sand stone ), and 3% of alluvial deposit ( recent deposit ).
