Matthew chose to take us to the Baikal Rift with his WoGE #326. The Olkhon island is almost as large as Madeira and has some fascinating tectonic features, thanks again for pointing me to that great spot, Matthew! Now it’s time for a new challenge. Find the following feature on GoogleEarth, post the location and a brief description of the geology in the comments, and all the fame will be yours.
I do envoke the Schott rule, which means you have to wait one hour for each previous win. Posting time is 15:04 UTC. If you are not sure about the rules, have a look here. You’ll also find a kmz-file with all the previous locations.
Click first on image, then on 1699 x 1084 in the header to enlarge:
Update: Since it’s been some days without a solution, here’s a larger image. Now it should be easy to find the spot.