The four discs are stacked in
pairs on
opposite sides
of a standard - sized Blu - ray case, which is topped by an impressive lenticular -
faced embossed sturdy cardboard slipcover.
In the summer
of 1970, Philip Leider — then the editor
of Artforum, the journal
of record for American art
of the moment — got into a car with two friends, the artists Joan Jonas and Richard Serra, and drove off to see a newly finished artwork: Michael Heizer's Double Negative, a
pair of cuts in the rock
of a Nevada mesa, directly
facing each other on
opposite sides
of a steep valley.