Mictlan chacalito.

This gif was on the exposition "Mexifuturimos" on Museo Tec in Puebla, Mexico.

A chamber inside the pyramid that connects with the underworld or Mictlan (the underworld of Aztec mythology, they took it from Zapotec culture), on the wall, there is this shape, a stair with a spiral (make me think on black holes), are made in a block 9x5 with opposite shape but perfectly balanced, for them numbers appoint transcendental reality, maths were an important thing to build this greatest places and show people the cosmovision of death.

Gif. 1116 × 864 px