Timm Ulrichs, Der Findling (The Boulder), 1978

Who else is in need of a hump day hideout? This photograph shows the German artist Timm Ulrichs carrying out his 1981 performance, The Boulder, whereby he spent ten hours encased in a giant granite stone, which had been cut in half and hollowed out in a shape corresponding to his furled body. “Its photographic documentation gives utterly intense and varying impressions of the work,” art critic Michael Stoeber noted of the resulting imagery. “On the one hand, the artist seems born in stone, symbiotically one with nature. On the other, within the stone womb of the boulder, his delicate and vulnerable form seems to be a symbol of utter loneliness and a need for protection.”