Sveifluháls, a tuff ridge with a maximum height of 395 m. Descends in steep cliffs to the lake Kleifarvatn.
The old route from Krýsuvík to Hafnarfjörður and Reykjavík went over Sveifluháls along the path Ketilstígur.
At the south end of the ridge is a single mountain Mælifell, 228 m.