Glymur in Hvalfjörður is the second highest waterfall in Iceland, 198 metres high. It is about an hour’s drive from Reykjavík, the capital, a trip worth taking. The hike from the parking area takes about 2 hours, more if you go the roundtrip. The trail is marked and there are footpaths. See: Best hiking trails

On the way you pass a cave and have to go over a creek below the waterfall. The climb is sometimes a bit strenuous and can be muddy and rocky in places so you need good walking boots.

For the round trip, that takes up to 4 hours, you have to go over the River Botnsá above the waterfall. There is no bridge there.
– This is a trip worth taking in the summer time 🙂