: Uru: Complete Chronicles, Myst Online: Uru LiveFound In
Ning trees, a unique type of crystal formation, have only been found in Ahnonay's second sphere. They range in size from about 6 inches tall to 7 feet tall. The crystals are very fragile, despite the similar appearance to the durable crystals of the Great Zero, and shatter upon contact with anything that touches them.
The ning trees are mainly found near the edges of the second sphere's island, or upon the faces of its walls. Once destroyed, the ning Trees leave behind a mark of cracked stone. These trees also serve as a barrier to progress much like the quabs in sphere one; because Ahnonay's "time travel" mechanism will only activate when all of the pressure plates on the island are clear, all of the ning trees must be destroyed before explorers can progress to the third sphere.