Trollgarden is a glacial moraine in the municipality of Hjelmeland in Rogaland county, Norway.

The moraine is a 5-metre (16 ft) tall ridge of stones, rocks, and boulders that runs for about 2 kilometres (1.2 mi) from the east side of the lake Kvivatnet across the moorland to the northern side of the mountain Brendeknuten in the Hjelmelandsheiane mountains.

In the old days, people thought it was magic powers such as trolls that had built the massive stone fence far into the Hjelmeland moors.

The geological explanation is that, when the glacial ice retreated, the stones were deposited in the mountains.

[3] The geology of the Trollgarden area was thoroughly investigated and described by Professor Bjørn G. Andersen in his Master's thesis (1954) ”Om isens tilbaketrekking i området mellom Lysefjorden og Jøsenfjorden i Ryfylke” (On the glacial retreat in the area between the Lysefjorden and Jøsenfjorden in Ryfylke).