While spreading the word of Pan's death and trying to recruit nature spirits for the impending war, Grover is knocked unconscious by Morpheus. He is asleep for several months and is awoken with his Empathy Link when Percy Jackson and Nico di Angelo search for the second entrance to the Underworld. Once he is awake he explains why he was in Central Park to begin with and then opens the entrance to the Underworld with his reed pipes.
|Not part of Riordanverse|
Gilgamesh's magic-hidden seven tier glass ziggurat with an iron frame and gardens is located within Central Park. Sikander and Belet evaded Asakkus and sought sanctuary here at Ishtar's preparations. During Nergal's infestation of Manhattan, the glass ziggurat was destroyed and Sikander discovered Gilgamesh hidden under his pile of vines and shrubbery.