Jalo Oasis (or Jalu, or Gialo) is an oasis in Cyrenaica, Libya, located west of the Great Sand Sea and about 250 km south-east of the Gulf of Sirte. Quite large, 19 kilometres (12 mi) long and up to 11 kilometres (7 mi) wide,[1] it supports a number of settlements, the largest of which is the town of Jalu. Jalu, was the administrative capital of the Jalu Baladiyah from 1983 to 1988, at which time the area became part of Ajdabiya District and as of 2007 is now part of Al Wahat District.
Because of its location and as a source of water, it had strategic importance during the North Africa Campaign in World War II and changed hands several times between Allied and Axis forces.[2]
The water at the Jalo oasis is quite saline (3,880 parts per million).[3] The water is alkaline with a pH of 7.4 and is very hard with numerous dissolved salts in addition to sodium chloride.[3]
In addition to Jalu, the oasis supports the following communities:[4]