After King Harald (I) Fairehair took control of all Norway, many of his opponents fled, some to Orkney and Shetland. From the Northern Isles they continued to raid Scotland and Norway, prompting Harald Hårfagre to raise a large fleet which he sailed to the islands. In about 875 he and his forces took control of Shetland and Orkney. They first landed in Harondswick on Unst.
