During the last 10 or so millenia a large lake, south of what is today the city of Ljubljana, slowly dried out, first enabling Neolithic and Bronze Age pile-dwellers to colonize it (the remains of pile dwellings are a UNESCO World Heritage Site today), then transforming into peat bogs and forest bogs.
Finally the humans arrived again, who cleared the forests, built a large network of drainage canals drying the land, and starting to grow crops.
Only a handful of wetlands, archaeological remains and occasional gelological drilling bear witness to a vast, invisible, forgotten lake.
On the lower left of this photo is the largest remnant of forest bogs in Ljubljana Marshes, called Kozler’s forest. All around it are fields of corn, wheat, cabbage, sunflowers – and, here and there, some Cannabis indica. 🙂 …
Canon A810 on a Rokkaku kite.