Original sentence: The  catacombs of London are a series of subterranean spaces in London, United Kingdom.The Camden catacombs are an extensive range of passages, constructed in the 19th century, which were originally used as stables for horses and pit ponies working on the railways.The catacombs below the chapel on site include a  group of 95 vaults with private and shared loculi for coffins.The the city has a high water table and there are several crypts/catacombs, including those of the West Norwood Cemetery, which has a remarkable collection of historic monuments on a landscaped hill
Edited sentence: Even more fascinating, however, are the catacombs below the chapel on site, a collection of 95 vaults with private and shared loculi for coffins.However, there are several crypts/catacombs, including those of the West Norwood Cemetery which has a remarkable collection of historic monuments on a landscaped hill.London is not renowned for its catacombs, given that much of the city has a high water table.The Camden catacombs, are an extensive range of passages, constructed in the 19th century, which were originally used as stables for horses and pit ponies working on the railways