The photo can be used for commercial purposes.
This is a 42 MPx picture of a waterfall in Adrspach-Teplice Nature park in the Czech republic.
Adrspach is the largest rock city in Central Europe protected as a national nature reserve. You can find here beautiful stone formations, waterfalls, lakes or interesting vegetation. Many stone formations have names and represent someone or something.
This photo was taken by hand without tripod, so we have to use higher iso and longer exposure time. We highly recommend taking a tripod, as there are more beautiful waterfalls and it is not easily possible to take pictures without it.