When using the Dream Nail to access Godhome, there is an extremely low chance that you will be transported here instead.
I do not know if it can be accessed more than once, or if there are other secrets similar to this one.

This memory seems to take place in the Wastes beyond the Howling Cliffs, sometime inbetween the events of the Godseeker leaving the Land of Storms, and arriving in Hallownest.

Also, Godhome appears to be a manifestation of the hivemind shared by the beings who collectively refer to themselves as The Godseeker(which is further evidenced by the fact the they never refer to themselves as singular, they always use Our, We, or Us).