(Erosionproof) World Tree Yggdrasil

Lore
Yggdrasil's many children scattered throughout the newborn lands. As holy trees, they served as foundations for the sprawling forests and the teeming life therein. Their entwining roots also provided further anchorage against falling into the netherworld.

Acquisition
See World Tree Yggdrasil

Name origin
Yggdrasil is an immense mythical tree that plays a central role in Norse cosmology, where it connects the Nine Worlds.