As defined by the Cleasby & Vigfusson Old Norse to English dictionary:
- jökul-sprunga (jǫkul-sprunga)
- u, f. a crevasse.
Orthography: The Cleasby & Vigfusson book used letter ö to represent the original Old Norse vowel ǫ. Therefore, jökul-sprunga may be more accurately written as jǫkul-sprunga.
Possible runic inscription in Younger Futhark:ᛁᚢᚴᚢᛚ-ᛋᛒᚱᚢᚾᚴᛅ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements