calm autumn alps mountain lake with clear transparent water and reflections. spiegelsee or mirror lake, reiteralm, steiermark,

alpine alps austria autumn beautiful blue calm dachstein destination europe fall fir forest hiking holiday lake landmark landscape mirror mountain nature october outdoor panorama panoramic park path peaceful picturesque pine reflection reiteralm rock rocky scenery scenic schladming season spiegelsee spruce steiermark stone stony tourism tranquil travel tree vacation view water