Gjálp and Greip

[2][5] Then Thor saw up in a certain cleft that Geirrod’s daughter Gialp was standing astride the river and she was causing it to rise.

He did not miss what he was aiming at, and at that moment he found himself close to the bank and managed to grasp a sort of rowan-bush and thus climbed out of the river.

The same myth is told in Þórsdrápa by Eilífr Goðrúnarson (late 10th c. AD), which is cited by Snorri Sturluson in Skáldskaparmál, although the gýgjar are not named in the poem.

[5] And they pressed their eye-lash-moon-flame-[eye-]sky [skull] against the roof-battens of the stone-plain’s [mountain’s] hall [cave].

The driver [Thor] of the hull of the storm’s hover- chariot broke each of the cave-women’s age-old laughter-ship-[breast-]keels [backbones].

[citation needed] In a lausavísa composed by Vetrliði Sumarliðason and quoted in Skáldskaparmál, Gjálp is mentioned as being killed by Thor.

Thor's Journey to Geirrodsgard (1906) by Lorenz Frølich .