The dragonkin that settled on Orthen debated about their situation with the Elder Gods. Kerapac, a Dactyl fledgling at the time, wanted to fight the Elder Gods by using a device that generated shadow anima, which was toxic to the Elder Gods. Without the approval of his fellow council members, Kerapac activated the device, which in turn caused Jas to manifest and completely destroy Orthen and bind the dragonkin to the Stone of Jas.
After acquiring the Needle during the events of Desperate Times, Kerapac flew to Orthen, where he used the Needle to pull a version of Orthen that was destroyed shortly after the dragonkin were cursed, but before his device was destroyed. Orthen predates Guthix's arrival to Gielinor, and is so old that at least one dragonkin believed it to be a myth.[3]
Orthenglass, a material created out of crystallised dragon breath, was likely named after the city.
^Jagex. "RuneFest 2019 Part 2 [OSRS."] (04:15:25), YouTube video. 5 October 2019. "Anachronia isn't Orthen, but Orthen is on Anachronia. Orthen is a city on Anachronia." During the Lore Q&A section at RuneFest 2019.Lost reference
^Jagex. "RuneFest 2019 Part 2 [OSRS."] (08:25:10), YouTube video. 5 October 2019. "Orthen. The first home of the Dragonkin on Gielinor." During the RuneScape Keynote section at RuneFest 2019.Lost reference
^Vicendithas, "Desperate Times", RuneScape. "Orthen? But...that's a myth isn't it? From times before even the green stone toucher arrived?"