But Sarah Tebbens, a geophysicist at the University of South Florida, noticed that the zigs and zags were similar to those that form on the surface of lava lakes in volcanic craters.

ECONOMIST: Geophysics

The laser scanning technology enabled us to investigate the natural environment in a completely new light by bringing the outcrop with its inaccessible cliffs, volcanic fissures and lava lakes into the computer where it could be analysed.

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