thingvellir national park, golden circle, islands at northern end of thingvallavatn, western iceland

american area areas atlantic attraction base beautiful circle clouds cloudy continental destination dramatic drifting environment europe european filling geological geology golden hike hiking iceland icelandic island islands lake landscape large largest light located location mid national nature north northern ocean outdoor outdoors park parliament plates quiet rift rock rocks serene site south southern sun sunlight thingvallavatn thingvellir tourism tourist valley volcanic walk water west western wide windows