Stefan Fueglistaler

Two images from my 1999 Tour d'Europe
A popular place for photographers in Iceland, thus many times photographed - yet still one of my favourites. Vejer de la Frontera in the evening sun
 
Not gorillas but trees in the mist
Pine trees in the mist, New Years Day 1999, Isola Elba
 
Quiz
Does anybody know what this is? I found it on a sandy beach in Greece, it consists of sand, size is a couple centimeters and thickness about a millimeter. I would be very happy to learn about it!