Glymur is the one of the highest waterfalls in Iceland with 198 meters (only Morsárfoss in Vatnajokull glacier is around 30 meters taller). The waterfall is located in Hvalfjordur – The Whale Fjord just an hour drive from Reykjavik. The hike to Glymur takes about 2,5-3 hours and it is on of the most incredible day hikes close to Reykjavik.