Canyon-like walls overflowing with mist define the Doubleground pavilion, which nestles within the sculpture garden of the National Gallery of Victoria, Melbourne.

Designed by local studios Muir and Openwork, the installation is intended to resemble a "series of chasms" weaving though the gallery's flower beds.
It is the fourth pavilion built as part of the National Gallery of Victoria's annual architecture commission, which invites architects to design temporary installations for the Grollo Equiset Garden.

Doubleground is constructed from 515 pieces of custom-cut black-painted plywood panels.
The panels have ground piled up against them to give the appearance that the chasms are being partially embedded in the ground.
"We chose a material that could do many things. The plywood needed to not only retain soil, define a wall but also to act as a balustrade," explained Muir.

"Black paint was specified providing a neutral condition allowing the geometry of the forms to be brought to the forefront. It's black because it's a shadow ? a figure cast on the landscape."

Doubleground is intended to reference the key architectural elements of the Roy Ground-designed gallery, in celebration of the building's fiftieth anniversary.
While the zigzagging walls nod to the famed stained glass ceiling in the Great Hall and its monolithic bluestone facade, the yellow and orange plants in the flower beds evoke the golden tones of the carpet beneath glass roof....