This geologically young volcanic field in western Sudan has nearly 700 vents and craters.
Published Jun 5, 2017
Part of the back-arc volcanism of the Andes, this complex landscape formed over 300,000 years.
Published Dec 30, 2012
As Medina has grown during the past three decades, parts of the Saudi city are built atop relatively young lava flows.
Published Feb 25, 2019
A jet black plateau in central Libya harks back to a time when lava flowed across the dry landscape.
Published Apr 28, 2016
This detailed astronaut photograph depicts a portion of the Gila River channel in south-central Arizona. The northernmost boundary of the Sentinel Volcanic Field is visible in the image, recognizable by the irregular flow fronts of thin basalt lava flows. Active agricultural fields along the Gila River are a rich green set against the surrounding desert.
Published Jul 28, 2008
In northwestern Saudi Arabia lies a field of volcanic lava that contains some 50 cones from the past 10,000 years.
Published Jan 5, 2011
East of the Andes, the volcanic field is a product of complex geological processes.
Published Jan 30, 2012
The western half of the Arabian Peninsula contains not only large expanses of sand and gravel, but extensive lava fields known as haraat. One such field is the 14,000-square-kilometer Harrat Khaybar, located approximately 137 kilometers to the northeast of the city of Al Madinah (Medina). The volcanic field was formed by eruptions along a 100-kilometer, north-south vent system over the past 5 million years. The most recent recorded eruption took place between 600–700 AD.
Published Apr 14, 2008
Acquired April 17, 2010, this natural-color image shows SP Crater and its associated lava flow in the San Francisco Volcanic Field of northern Arizona.
Published Feb 27, 2011
The Holuhraun lava field in Iceland continues to grow.
Published Jan 8, 2015
A team of NASA scientists headed to Holuhraun because the volcano has geologic cousins on Mars.
Published Oct 9, 2018
This volcanic field is a planetary analog—a place where scientists and engineers can test their instruments and techniques before sending them off to otherworldly environments.
Published Sep 19, 2017
Although the basaltic rock formed a hard crust, the flow is likely hot enough to prevent snow from building up on top.
Published Nov 9, 2016
The Hell’s Half Acre Lava Field is the youngest and easternmost lava flow associated with the Snake River Plain basalts.
Published Nov 17, 2008
In June 2015, a team of scientists, journalism students, and an astronaut conducted a geological field study similar to what future astronauts might have to do when they first land on the Moon or Mars.
Published Jun 15, 2015
Volcanic ash from earlier eruptions has settled onto the snowy landscape, leaving dark gray swaths. The ash stains are confined to the south of the Karymsky’s summit, one large stain fanning out toward the southwest, and another toward the east.
Published Jun 17, 2007
