signed and dated 'Christo 1978' upper right of the left part

graphite, charcoal, pastel, map and photograph collage on paper, in Plexiglas box, in 2 parts

left part 72 x 28.8 cm (28 3/8 x 11 3/8 in.)
right part 72 x 56.7 cm (28 3/8 x 22 3/8 in.)
overall 72 x 85.5 cm (28 3/8 x 33 5/8 in.)

Executed in 1978, in the United States.