| Category | Rivers |
| Continent | Brucrumus |
| Region | Menortamon |
| Map | Velkyn |
Rorgny Hrolmir is a lava river of sector Velkyn. It begins at the Velkyn Spigot. In the God Era, it fed the volcano Bora Korek. It was a side project of Surtur. He saw a land above and beneath unsuitable for his fire giants, so in violation of agreements with the Covenant, he began turning it into a fiery expanse. Kossuth was sent to fix Surtur's misdeeds. Master of everything fire, Kossuth reduced the area's pressure, making the volcano go dormant and hundreds of miles of lava tubes go cold.