Complex sentence: In the region around the southern half of Lake Toba and on Samosir Island, many villages feature various kinds of dwellings, however only a few of them have the original "open" sopo.
Split into simpler sentences: In the region around the southern half of Lake Toba and on Samosir Island, many villages feature various kinds of dwelling houses. However, only few of them have the original "open" sopo.