full seamless spherical hdri 360 panorama view near dam lock sluice on lake impetuous waterfall with beautiful clouds in

360 dam lock panorama sluice hdri lake hdr waterfall degree equirectangular spherical seamless clouds background bank barrage belarus bridge canal cascade concrete curve dock engineering flood floodgate flowing forest gate gateway green hydropower old outdoor overflow projection river scenic sky stream structure sun transport valley waterside full view impetuous beautiful