World Gate

The World Gate, also known as the Portal of Life, is a dimensional passage that allows travel between worlds. It is said to have been sealed during the Second Age.

First Age
In the First Age, Guthix used the World Gate to bring creatures from other planes to Gielinor, such as Humans, Gnomes, Fairies, Ents and Dwarves. The elves were also brought to Gielinor from their ancestral homeland through the World Gate by Seren. According to The Book of Seren and the Crystal of seren, the World Gate was consumed by an 'emptiness' that enveloped the land, and sought to control and bend all to its will. This suggests that Zaros took control of the Gate during his reign in the Second Age, and may have been responsible for its closure. Why and how Zaros did this is still not clear, though it's likely that he sealed it to stop other races from joining his enemies. This cut off elven access to Crystal, their primary resource.

Kethsi
Elder Mage Etheron of the Mage Conclave of Kethsi spent six years in the outer planes on an expedition. He returned through the World Gate with the Stone of Jas, which allowed the Kethsians to cast spells to better their civilisation. However, the stone later brought the Dragonkin, which ultimately caused the demise and ruination of Kethsi.

Location
The World Gate was in Isafdar at the time of the elves arrival, and due to its consistent link to Seren's Ancestral Home for nearly two ages likely remained there. According to the humans in Meeting History however, it was located east of modern day Ardougne, on the other side of a mountain.

Trivia

 * The examine text is a reference to the game Portal.
 * In a recent Above the Lore Podcast, Mod Osborne mentioned the World Gate would feature in a upcoming quest.