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
The Holuhraun lava field in Iceland continues to grow.
Published Jan 8, 2015
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 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
Part of the back-arc volcanism of the Andes, this complex landscape formed over 300,000 years.
Published Dec 30, 2012
Es Safa is a striking basaltic volcanic field located in Syria, within the larger Harrat Ash Shamah—the largest volcanic field on the Arabian tectonic plate.
Published Sep 20, 2010
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
This geologically young volcanic field in western Sudan has nearly 700 vents and craters.
Published Jun 5, 2017
Fresh lava flows are difficult to distinguish from the barren rock of Tolbachinsky Dol, a volcanic plateau.
Published Jun 9, 2013
alert message
