Raggejavreraige or Råggejávrrerájgge is a cave located in a mountain above the Hellemofjorden in Hamarøy Municipality in Nordland county, Norway.
[1] Generally, the area is a vast plateau (exceeding an elevation of 700 metres (2,300 ft) above sea level) that is incised by the steep-walled Tysfjorden.
Within the impermeable rock, there are three two-dimensional stripes of marble that run from the top of the plateau to below sea level (the fjord is 450 metres or 1,480 feet deep), and continue on the other side.
[2][3] Surface water atop the plateau sinks where it encounters the marble, but the accessible entrance to Raggejavreraige ("RJR") is some 100 metres (330 ft) away, a short distance above the shallow valley floor.
[2][3] Norwegian geologist Steinar Foslie visited the RJR area in the late 1930s, and noted the presence of sinking streams resurging at sea level.
In 1968, British caver David Heap of the Kendal Cave Club and Ulv Holbye (after whom Ulvgangen is named) led a school party to about 180 metres (590 ft) partway down Storstupet, which was descended the next year by a KCC party using a winch, completing exploration of most of the cave and exiting via the middle entrance.