Unescapable geometry in Heritage Found without flight

Date & Time: Any
Frequency: Repeatable
World name: Any (Malboro)
Character name: Any (Shining Evenfall)
Class/Level: Any, must be able to access Heritage Found
Party or solo: Any
In-game time: Any
Area and coordinates: Heritage Found (12.9, 16.9)
Steps:
1. Step into hole at marked coordinates without attuning to all aether currents in zone.
2. Attempt to leave hole.
3. See that no series of movements allows you to exit the hole.

Without flight, the only way to escape the hole is to ride pillion on another player's mount or cast Teleport or Return.