high stone menhirs at the site of an ancient burial in a picturesque valley surrounded by hills

ancient archaeologic archaeological archeology big boulder burial field grave gravestone green ground high hill history horizon khakassia kurgan landscape meadow megalith megalithic memorial menhir monolith monument mound mystical nature old panorama peaceful pillar plateau prehistoric prehistory rock ruin scythian siberia sightseeing sign slope south steppe stone stones summer tombstone valley