Time-lapse shot of the 'Iao Valley river stream in Wailuku, Maui's main source of drinking water naturally filtered by lava rocks

river bed rapids stream boulders river iao valley floor valley rocks nature environment terrain scenery mountains water timelapse flow location reserve view windward still camera rainwater jungle movement vantage point resource ground filtering climate natural maui sacred forest hawaii steady island clouds moving fast weather wind short clip super speed sunlight sky tropical static shadows