Golden Lake

The Golden Lake, also called the Golden Pond, is a small lake hidden inside of Minerva's Door which can only be opened using the Promised Pen. It is located on the third layer of Goldy Pond. This lake is considered the "real" Goldy Pond, from which the entire place gets it's name.

According to Lucas, the Golden Water in the lake is abnormal, as the person touching it cannot get wet by it. In the middle of the lake is a floating island with a cabin on top. In the cabin, there is an old elevator and an old telephone. It is revealed that the elevator once led to the Human World, but was deactivated when the Poachers took over Goldy Pond. The elevator can only be accessed by using the Promised Pen. The book, Adventures of Ugo hints at how to find the pen cap for the Promised Pen. The cap is a 'memory stick' with updated data, and gives information about Demons and the Demon World. During a pre-recorded phone call from Minerva inside the floating cabin which contains the elevator at Goldy Pond, he told the escapees that he left "the rest of the details" in "Marvine's bed". In the book, Marvine sleeps inside of a desk drawer, alluding that the pen cap was hidden in a nearby desk drawer.

The golden water seems to also be related to a temple that is important to the seven walls, and Emma's ability to enact a new promise with, although exactly how is currently unclear.

Trivia

 * Since this lake is the actual Goldy Pond, images of Goldy Pond on maps feature this specific lake.
 * When William Minerva invited the escapees to Goldy Pond, he was specifically inviting them to this lake, or more so, to the cabin on this lake to hear his pre-recorded phone call.