Saudi Arabia's Neom has awarded an infrastructure development contract at Trojena to a joint venture of the local Al-Ayuni Investment & Contracting and Turkish Limak Holding. The contract scope covers the construction of a tunnel and freight depot, and excavation works at Trojena, a mountain destination 50 kilometres from Saudi Arabia's Gulf of Aqaba coast. The so-called Neom Time Travel tunnel extends 4.4km and includes twin-bored tunnels with two ventilation shafts and an at-grade section. The tunnel links the Mirage Visitor Centre and the Vault, Trojena's centrepiece development. The excavation works will include support for major tieback structures of anchor tunnels and anchor bays for the development's suspension bridges. The Mirage freight depot will be located next to the Mirage visitor centre, providing access to the underground Time Travel tunnel. The Vault will be built vertically inside a hollow mountain that will fold in on itself. It will be 198 metres high, 253 metres wide and 864 metres long. The total surface area of the project is 200,000 square metres.