Aurgelmir

Aurgelmir, also called Ymir,  in Norse mythology, the first being, a giant who was created from the drops of water that formed when the ice of Niflheim met the heat of Muspelheim. Aurgelmir was the father of all the giants; a male and a female grew under his arm, and his legs produced a six-headed son. A cow, Audumla, nourished him with her milk. Audumla was herself nourished by licking salty, rime-covered stones. She licked the stones into the shape of a man; this was Buri, who became the grandfather of the great god Odin and his brothers. These gods later killed Aurgelmir, and the flow of his blood drowned all but one frost giant. The three gods put Aurgelmir’s body in the void, Ginnungagap, and fashioned the earth from his flesh, the seas from his blood, mountains from his bones, stones from his teeth, the sky from his skull, and clouds from his brain. Four dwarfs held up his skull. His eyelashes (or eyebrows) became the fence surrounding Midgard, or Middle Earth, the home of mankind.

Aspects of the topic Aurgelmir are discussed in the following places at Britannica.

Articles from Britannica encyclopedias for elementary and high school students.

Ymir - Student Encyclopedia (Ages 11 and up)

Ymir, or Aurgelmir, in Norse mythology is the primeval giant from whose body the world was created. According to the ’Poetic (or Elder) Edda’, in the beginning of the universe, there was a yawning chasm called Ginnungagap. Within it to the north lay an icy wasteland realm called Niflheim, and to the south, a realm of fire called Muspelheim. In the space where the warm gusts of heat from Muspelheim met the ice and poisonous mists of Niflheim, the ice thawed and dripped. Life came into these drops from the energy of the heat, and a mighty giant formed in the likeness of a man. This was Ymir (Mud Seether). Ymir was evil, and all the generations of evil frost giants in Norse mythology descended from him.