Now let´s go to 502: it has the advantage of joining two of my interests, one in geology and another in ... hmmm ... other earth science!
As usual, your goal is to find out the exact location and the geology of this place and, if you are the first, you can have the honor of presenting the next WoGE.
No Schott's Rule!
Rules, tips and previous WoGEs are collected by Felix on his blog and a KML file is available with all WoGEs.
Ale jacta est! ;)