I often saw the plone logo the last days. Not only while browsing the documentation section on plone.org but also when i went shopping (did not take a picutre of these cookies ;-) or biking. This picture

was shot when i was biking up to the “feuerköpfle” (N47° 29.908 E010° 40.953, 1457 Meters) to enjoy this scenic view on the basin of reutte:

I guess it’s some kind of duct cover, about 20 cm in diameter.

I’m sure there are much more pictures than this one (and the snow logo they did on snow-sprint 2005) around, so please let me know.