Sticky note: "The Mlagarassi valley near the Gottorp salt works. The house with the scaffolding in the front centre of the picture stands above the Njansa - Sool spring. Beyond the river, the village of Marapamba lies on a terrace some 15 metres above sea level. Behind it, the tributary valley of the Rutschugi River is visible. In the right-hand corner of the picture is a water wheel that drives the Sool pump. To the left of the waterwheel are several islands in a row; the second is Lubundussi Island. Width of the valley at the salt works about 1 1/4 km, depth about 75 metres. The slopes of the valley consist of sandstone at the top and shale at the bottom. At the bottom of the valley there is gneiss with a north-north-westerly strike, into which amphibolite and gabbro veins mostly run in the same direction. The brine emerges from these."