Rock transport using six-wheelers (IMAGE) Norwegian University of Science and Technology Caption The American researcher Nat Lifton in front of Cottontop Mountain in Heimefrontfjella, East Antarctica. He's looking for stones that can be collected and analysed for cosmogenic isotopes. The six-wheeled pickup truck is used to transport researchers from the Antarctic research station where they're staying to their different field sites. Photo: Carl Lundberg Credit Photo: Carl Lundberg Usage Restrictions with proper credit and only in association with articles about this research License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.