Artist unknown.
Classified under "Continental School, 19th Century" this painting possibly depicts Czarny Staw (Black Tarn/Lake/Pond) below Mount Rysy, in the Tatra Mountains, Poland, or the nearby Morskie Oko (Eye of the Sea).
"The name "Morskie Oko" ("Sea Eye", "Eye of the Sea") is derived from an old legend, according to which the lake was connected to the sea via an underground passage." ~ Wikipedia.
Painted circa 1900 or before.
"The Moonlit Lake", by Samuel Jackson AOWS (Associate of Old Watercolour Society), image via Amber Tree, on Flickr.
Samuel Jackson, British artist 1794-1869.
He was called "the father of the 'Bristol School' of art."