A 1958 woodcut by M.C. Escher, Circle Limit I explores hyperbolic geometry through a repeating, circular pattern of interlocking fish figures.

Circle Limit I is a woodcut print by the Dutch artist M.C. Escher, completed in 1958. This work demonstrates the artist's fascination with hyperbolic geometry, a field he explored after correspondence with the mathematician H.S.M. Coxeter. The composition is contained within a circular boundary, representing a portion of the Poincaré disk model. Within this circular frame, Escher arranges a series of fish-like figures that diminish in size as they approach the perimeter. The figures are organised in a repeating pattern that fills the space without gaps. By alternating black and white forms, Escher creates a sense of balance and symmetry. The figures are oriented such that they appear to radiate from the centre, creating a visual effect of infinite progression towards the edge of the circle. Escher used the woodcut medium to achieve the sharp contrast between the black and white shapes. The precision required to carve these interlocking forms reflects his technical skill. Unlike his earlier works that relied on more traditional perspective, this piece engages with non-Euclidean geometry to represent a space that is theoretically infinite, yet bounded by the circular frame. The work remains a clear example of how Escher integrated mathematical concepts into his visual practice, moving beyond simple representation to explore the structural properties of the plane. The repetitive nature of the fish motifs creates a rhythmic quality, drawing the eye from the larger central figures to the increasingly smaller ones near the circumference. This print is part of a series where Escher experimented with different tilings of the hyperbolic plane, each offering a different configuration of shapes and symmetries.