Santa Isabel Island Santa Isabel Island Santa Isabel Island (also known as Isabel, Ysabel and Mahaga) is the longest in the Solomon Islands, the third largest in terms of surface area, and the largest in the group of islands in Isabel Province. Choiseul lies to the north-west, Malaita to the south-east. The Pacific Ocean lies to the north, and Guadalcanal (Isatabu) to the south. The highest point in Santa Isabel is Mount Sasari, 1220 meters (3675 ft). River Marutho runs down that mountain into the ocean at Hofi. Almost all the rivers or streams run down that center point except for those at
Choiseul Province Taro Island. The largest reptile is the saltwater crocodile ("Crocodylus porosus") known from Australia. Known birds are the Sanford's fish eagle ("Haliaeetus sanfordi"), the Pacific black duck ("Anas superciliosa"), and the eastern reef egret ("Egretta sacra"). Until the beginning of the 20th century, it was the only habitat of the now extinct Choiseul crested pigeon ("Microgoura meeki"). Choiseul is also an important breeding place for the loggerhead sea turtle ("Caretta caretta"). The flora is represented by mangroves and coconuts. Commercial logging continues to operate in Choiseul throughout the entire province. Nickel Mining is planned to commence in 2016 in Katupika