Gjáin in Þjórsárdalur Valley is a hidden gem in Iceland, known for its lush vegetation, waterfalls, and lava formations. This fairyland oasis can be reached by an easy hike from the Viking settlement manor at Stöng. Visitors can explore the beautiful Gjárfoss waterfall and marvel at the unique basalt cliffs and lava caves. With its Game of Thrones filming location fame, Gjáin has become a popular spot, so let's remember to tread lightly and preserve this delicate pearl of nature for future generations to enjoy.