Those are different strange and new moongates, Damin. Referred to as "rifts". There are 8 and they initially appeared as blackish or silverish moongates with energy fields within them and sparkled if you stood in one carrying blackrock. I can find no other present use for the gates, and they've now deteriorated into black rift puddles, but the fields are still present. These are located in Ilsh in the blood dungeon, at the Tram Orc Fort near Cove, in Malas just north of the Umbra Arena, in Tram Lost Lands far north of Delucia, in the Lost Lands of Fel south of Papua, in Tokuna on Mt. Hakona Isle, in Tokuno on Osamu-jima at the Winter Spur, and on Ice Island in Fel. There are sextant coordinates and photos posted on the Inu wiki.
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