IAG Photo Contest – winner February 2024

The winner of the IAG Photo Contest in February 2024 is Stéphane Jaillet (France)! Find below his photo and descriptive text.

If you want to participate in the contest, find the rules, guidelines and details on the procedure here.

Rock comets from the Patagonian karsts

by Stéphane Jaillet, France

On the western side of Chilean Patagonia (50°S), the lapiazed surfaces of the karsts of Madre de Dios Island are subject to intense dissolution. The abundance of precipitation (8,000 mm / year) favours the highest dissolution rate in the world. Since the glaciers retreated, erratic blocks have remained on the ground. They protect the underlying limestone from dissolution and wind. Behind the boulders, a ridge has been preserved. We have named these amazing forms the rock comets of limestone Patagonia.