| Category | Rivers |
| Continent | Brucrumus |
| Region | Menortamon |
| Map | Velkyn |
Rorgny Hrolmir is a lava river situated within Velkyn Sector. The river originates at the Velkyn Spigot. During the God Era, it fed the volcano known as Bora Korek. This was a side project undertaken by Surtur, who deemed the land above and below unsuitable for his fire giants. In violation of the Covenant, Surtur began transforming the region into a fiery expanse. To rectify Surtur's misdeeds, Kossuth, the Master of all things fire-related, was dispatched. Kossuth reduced the area's pressure, causing the volcano to become dormant and hundreds of miles of lava tubes to grow cold.