I've begun investigating possible Duckweed localities in my district. This in preparation for a full-scale botanical study later this summer.
On my way to a promising site today (which turned out to be not only promising, but exciting as far as Duckweeds go), I took time to make a photo of one of the larger ancient burial mounds of which there are quite a number in this region. This is from early Iron Age and around 2.500 years old. Infrared with the 25mm CV f/4 Skopar on the NEX-5N monochrome. There must have been a lot of temptations to raze the mound and till it for agriculture over the millennia since it was created. However, it is still unmarked by the time passages and today serves as a reminder not to forget our cultural past.