A major summit center and hotel with adjoining villas built into the mountains deep within the Sharaan Nature Reserve in AlUla. Set for completion by 2024, the resort will include 40 guest suites, and the Summit Center will be comprised of 12 private pavilions and 2 private villas.

The structural design entails ensuring the long-term stability of each excavation volume forming the hotel suites and pavilions in conjunction with geotechnical engineers. Each structure being unique, necessitates finding the right position & dimension and the right relation between each excavation volume to optimize the untouched rock surface.

Terrell is also designing all the additional buildings, predominantly underground: plant rooms, accommodation, logistics center and tunnels.  The project has required evaluations of the flash flood and rock fall risks in the mountain and WADI using numerical simulations on 3D models.

The MEP project has adopted ambitious sustainability goals to minimize the environmental footprint and preserve the desert with minimum use of water and energy, zero waste and no emissions on site. The site heating and cooling demands are met with 4 pipe air source heat pumps located in the utility center. The water system has been designed to minimize water usage and ground water extraction. The main water supply is produced via boreholes to a raw water storage tank. It is then filtered and treated using reverse osmosis to potable drinking quality.