local volunteers. These include Otari-Wilton's Bush, dedicated to the protection and propagation of native plants. The Wellington region has of regional parks and forests. In the east is the Miramar Peninsula, connected to the rest of the city by a low-lying isthmus at Rongotai, the site of Wellington International Airport. Industry has developed mainly in the Hutt Valley, where there are food-processing plants, engineering industries, vehicle assembly and oil refineries. The narrow entrance to the harbour is to the east of the Miramar Peninsula, and contains the dangerous shallows of Barrett Reef, where many ships have been wrecked (notably the inter-island ferry in 1968). The harbour has three islands: Matiu/Somes Island, Makaro/Ward Island and Mokopuna Island. Only Matiu/Somes Island is large enough for habitation. It has been used as a quarantine station for people and animals, and was an internment camp during World War I and World War II. It is a conservation island, providing refuge for endangered species, much like Kapiti Island farther up the coast. There is access during daylight hours by the Dominion Post Ferry. Wellington is primarily surrounded by water, but some of the nearby locations are listed below. Geology Wellington suffered serious damage in a series of earthquakes in 1848 and from another earthquake in 1855. The 1855 Wairarapa earthquake occurred on the Wairarapa Fault to the north and east of Wellington. It was probably the most powerful earthquake in recorded New Zealand history, with an estimated magnitude of at least 8.2 on the Moment magnitude scale. It caused vertical movements of two to three metres over a large area, including raising land out of the harbour and turning it into a tidal swamp. Much of this land was subsequently reclaimed and is now part of the central business district. For this reason, the street named Lambton Quay is 100 to 200 metres (325 to 650 ft) from the harbour – plaques set into the footpath mark the shoreline in 1840, indicating the extent of reclamation. The 1942 Wairarapa earthquakes caused considerable damage in Wellington. The area has high seismic activity even by New Zealand standards, with a major fault, the Wellington Fault, running through the centre of the city and several others nearby. Several hundred minor faults lines have been identified within the urban area. Inhabitants, particularly in high-rise buildings, typically notice several earthquakes every year. For many years after the 1855 earthquake, the