The lake was created unintentionally when mine tunnels were breached by water during extraction operations in 1925.
The specific emerald hue is a optical phenomenon caused by the high chalk content of the submerged soil particles.
The site serves as a hibernation location for diverse bat species, including the Bechstein's bat.
Remnants of the historic 'Hohenzollern' mine infrastructure are still visible in the form of concrete ruins around the perimeter.
The water basin is completely rain-fed and has no natural inflow or outflow streams.
Szmaragdowe Lake is an artificial lake located within the Szczecin Landscape Park in Poland, formed in 1925 by the flooding of a former chalk mine. The intense emerald-green color of the water results from high concentrations of calcium carbonate reflecting sunlight. The lake sits at an altitude of approximately 30 meters above sea level and reaches depths of up to 18 meters. It is situated on the left bank of the Oder River, integrated into the hilly terrain of the Beech Forest (Puszcza Bukowa). The site is protected as a geological monument due to its industrial heritage and unique mineral composition. Underwater visibility can reach several meters, though the deep basin is strictly off-limits to swimmers. Surrounding cliffs offer panoramic views of the water surface and the city of Szczecin. The area functions as a central hub for regional hiking and cycling trails.
The viewing platform located on the northern ridge providing a wide-angle perspective of the lake basin.
Wear sturdy hiking shoes as the terrain surrounding the lake involves steep, unpaved inclines.
Stick to the marked trails, as the cliff edges can be unstable due to past mining activity.
Visit on a sunny day to observe the water's color shift, which is less vibrant under heavy cloud cover.
Do not attempt to descend the steep, non-designated slopes down to the water's edge, as they are prone to erosion.
Swimming is strictly forbidden due to unstable, steep banks and deep, cold water.
