Mohns Ridge
The Mohns Ridge is a segment of the Mid-Atlantic Ridge located to the north of Jan Mayen in the Arctic Ocean. It is bounded to the south by the Jan Mayen fracture zone, and transitions to Knipovich ridge in the north-east. In 2008, a black smoker vent field named Loki's Castle was discovered along one of the axial volcanic ridges in the area. References

Further reading 

Mid-Atlantic Ridge