unfrozen turquoise katun river in altai mountains on a frosty winter day. incredible mountain valley landscape in sunlight

alp altai background beautiful blue climate cold colorful country day december environment frost frosty frozen high ice incredible katun landscape mountain mountains natural nature north outdoor peak reflection river rock rural russia scene scenery scenic season siberia sky slope snow snowy stream sun sunlight tourism travel tree turquoise unfrozen valley view white wild wilderness winter wintertime