Somethings we know about the
Underrealm:
- The Underrealm is estimated to be 100 km2 in area.
- There will be areas that are obstructed by chasms or other features.
- The location of Underrealm entrances throughout the world is focused around natural geographic choke-points that exist above ground. This provides alternate subterranean routes that can be used by caravans, raids, and other player activities.
- Not all entrances to the Underrealm will be open at the same time. This can shift dynamically (based on node states) that cause different routes to open up, which may be more or less advantageous than other routes.
In other words, deep seas would obstruct the Underrealm, so most of it is probably under landmasses. The chances of there being passages under the ocean is slim. However, something is strange about the new map. I've noticed that the islands are more centered. The distance between lands may imply the level of depth of those waters. These distances are shorter near these islands.
I do not have any good tools for measuring the new map, nor do I really want to get all scientific about a screenshot from a livestream. I'll just use a simple line tool with equally sized and spaced dots. Called them "paces" as some pseudo measurement unit for distance. More paces means a greater distance. I've tried to make the "shallow paces" contain more paces intentionally, especially in the ice regions, so that people don't think I'm putting too many paces on the "deep paces" and not enough on the other.

Could these waters be shallow enough for the Underrealm? Would people like such routes to be present in the game? Should entrances to such passages be dynamically impacted by nodes and environments?