Commissioned by Tate Modern, Skirt of the Black Mouth is a long-term piece of public art by artists Heather and Ivan Morison. It is part of the Tate Modern Project, a new building development on the South side of the Tate Modern site. Skirt of the Black Mouth is a site-specific work that creates a new park space with seating and takes a new approach to the building site hoarding by creating a public space that uses the boundary of the building site.

Three-meter high burnt timber louvered panels were used to make the back wall of the work. As the public move about the space the louvered wall creates moments of transparency with site-lines into the development and moments where views and light are completely blocked. Pre-cast concrete blocks at the foot of the boundary form a wall of benches for the park space. Across the site runs a path formed of up-grain cross-sections of burnt timber larch cobbles. For this prestigious commission in central London Queen & Crawford acted as installation manager. Working in a tight urban space, surrounded by existing buildings and with limited access this project needed to be managed with precision.