Natural lakes of Slovenia - The Black Lake
Date of issue: 27.01.2023
Author: villa creativa
Motive: The Black Lake
Printed by: Agencija za komercijalnu djelatnost d.o.o., Zagreb, Croatia
Printing Process and Layout: 4-colour offset in miniature sheet of 1 stamp
Paper: Tullis Russell Chancellor Litho PVA RMS GUM, 102 g/m2
Size: Stamp 42.60 x 29.82 mm; miniature sheet 70.00 x 60.00 mm
Perforation: Harrow 14 : 14
Photo: Matjaž Corel
Natural Lakes of Slovenia
The Black Lake in the Pohorje
Lying at a height of 1,200 metres above sea level, not far from the Pohorje peaks of Osankarica and Veliki Vrh, the Black Lake formed in around 6000 BC. Research suggests that the inhabitants of the Pohorje at that time dug down into the boggy terrain, resulting in the formation of the lake. With the large-scale exploitation of the area’s forests in the nineteenth century, the lake was made bigger as part of the process of transporting logs down into the valley.
Today the lake covers an area of around 50 hectares. It owes its name to its dark, almost black colour – the consequence of a thick layer of silt on its bottom. This silt, which has built up over centuries, consists largely of organic debris from dead plants and animals. The lake is surrounded by forest and both forest and lake are protected as a forest reserve.