[1][5] The work comprises three 3-metre (9.8 ft) high panels cast in pigmented concrete in deep relief, incorporating motifs including "sunbursts, donuts, triangular wedges and shards" and Aztec-like symbols.
[2][1] Mitchell said "that the treatment of the external face of the underpass provided climbing opportunities for the adventurous",[1] and a group of student rock-climbers have plotted bouldering routes on the murals.
[2] Mitchell's work has been described as having "a vigorous organic quality, spreading like coralline encrustations along the walls".
They have fulfilled their aim to elevate an otherwise utilitarian structure and encourage interaction with the urban environment.".
[3] Mitchell said of his work: "Hockley flyover was one of the greatest things that ever happened in this country because it was the first of its kind and certainly of its scale.