beautiful mountain lake with turquoise clear water in the altai republic siberia russia. pure blue water in a deep lake surrounded

siberia lake altai blue forest landscape mountain nature peak sky snow tourism view water beautiful reflection valley environment green scenery summer tranquil mountains range travel clouds highlands trekking altairepublic national outdoor russia scenic tree alp calm clarity clear desolate destination ecology height lakeside lofty majestic massif mountaineering quiet rocks serene