The Modouyu lighthouse is situated on Modouyu Island, a tiny islet at the extreme northern end of the Penghu Islands, about 12 km (7.5 mi) north of Paisha. This historic tower built in 1902 is Taiwan's tallest lighthouse: the 40 m (131 ft) round cast iron tower is painted with black and white horizontal bands. Since the waters between Modouyu and Jibeiyu is a deep water abrasion platform, submerged reefs are everywhere, even where the water is less than 1m deep, hence the numerous accounts of shipwrecks. This area was once called the "Dangerous Penghu Bermuda Reef-striking Area ". The island does not have electricity and all electricity comes from the three generators to keep the lighthouse running. Modouyu tower is the only lighthouse that has a reservoir built inside it to store the rainfall.
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