Complex sentence: That Cape Agulhas itself was the fittest spot for the lighthouse and that the site should not be on top of the hill but on a part of the under feature of the same, which by shelving gradually down to a point, forms Cape Agulhas.
Split into simpler sentences: That Cape Agulhas itself was the fittest spot for the lighthouse. That the site should not be on top of the hill but on a part of the under feature of the same, which by shelving gradually down to a point, forms Cape Agulhas.