relax place at water parting of ubonratana dam, khon kaen, thailand. silhouette

architecture background beach beautiful beauty blue bridge building city cloud color construction crest dam dawn divide drainage dusk electric embankment engineering environment evening gradient horizon interfluve irrigation landmark landscape leading light line lonely nature old outdoor park peaceful public relax reservoir rough scenic sea season shadow silhouette sky space summer sun sunrise sunset surface technology thai thailand top tourism tourist travel twilight vacation view water watershed weather winter