Traces of Hrad Děvín (fourteenth century castle, of which the only visible remains are the imprints on the form of the land and walls now scattered rocks), Prokopské údolí, 4 November.
I am unsure what type(s) of oak there are in Prokopské údolí (Prokop Valley) Natural Reserve: "cow-wheat oaks" are mentioned, but I can only find cow-wheat (Melampyrum pratense) as a yellow-flowered plant often found beneath oaks. Perhaps these are a type of red oak (also appearing to the right of the top picture).