Haruj: Libya's Volcanic Wonder

Haruj is a massive volcanic field sprawling across 42,000 to 45,000 sq km in central Libya. Also called Haroudj, it's one of several volcanic fields in Libya, a testament to the region's complex geological history. The field is characterized by around 150 volcanoes, including basaltic scoria cones and about 30 small shield volcanoes, craters, and expansive lava flows. The landscape is dominated by black basalt, creating a striking contrast with the surrounding Sahara sands. The highest point is Garet es Sebaa, reaching 1,200 meters. Al Haruj is divided into two main areas: Al Haruj al Aswad (Black Mountain) in the north and Al Haruj al Abyad (White Mountain) in the south. These names reflect the varying colors of the volcanic rocks. Volcanic activity in the area began around 6 million years ago and continued into the late Pleistocene, with the most recent lava flows occurring in the Holocene, approximately 2,310 ± 810 years ago. The volcanism blocked ancient rivers, contributing to the formation of Lake Megafezzan. Despite its remoteness and harsh environment, Haruj has been a valuable territory for people living in nearby oases for millennia. When it rains, the area experiences a sudden greening, attracting people from surrounding areas to graze livestock and hunt. Historically, the area was inhabited in prehistoric times, with evidence of prehistoric tools and rock art. Today, oil fields operate north and east of the field, bringing some development to the region.