Kjeragbolten

Kjeragbolten (English: "Kjerag Bolt") is a boulder on the mountain Kjerag in Sandnes municipality in Rogaland county, Norway. The rock itself is a glacial deposit wedged in the mountain's crevasse. It is a popular tourist destination and is accessible without any climbing equipment. However, it is suspended above a deep abyss. It is also a popular site for BASE jumping. The boulder is just southwest of the village of Lysebotn, just south of the Lysefjorden.
Geology.
Rogaland lies in a weak tectonic zone, allowing the river to dig into the surrounding sandstone mountain. During the several ice ages known to have occurred in Scandinavia, Norway was completely covered in glaciers. Between the ice ages, the meltwater formed and reformed the valley up to 22 times. After the last ice age, global warming caused a rise in sea level, flooding the fjords. The boulder was deposited during the last glacial period, at around 50,000 B.C. As the Norwegian Glacier melted, it was accompanied by a rebound in rock formations as the ice was removed. In Kjeragbolten's case, the rebound was faster than the rising sea level, which wedged the rock into its current position.
Tourism.
Kjeragbolten has long been a famed photo op in the Kjerag trails. It was featured in the 2006 viral video "Where the Hell is Matt?" where traveler Matt Harding danced atop the precarious boulder. Because of its enormous popularity, long lines usually form with people who want to have a photo from the site. Expected waiting time can be anywhere from a few minutes to over an hour, especially when there are cruise ships in Stavanger.