Pages of the Dresden codex on eclipses . The image shows several adjoining pages of the Dresden Codex, an ancient Maya manuscript. The pages are filled with dense Maya hieroglyphs, numbers, and symbols arranged in horizontal rows and vertical columns. Much of the imagery uses black and red ink on a cream-colored, weathered surface. Across the pages are repeating patterns of dot-and-bar numerals, used in Maya calendrical calculations. Interspersed among the glyph blocks are stylized drawings of deities and serpent-like figures, characteristic of Maya cosmology. These particular pages are known for containing astronomical tables related to eclipses, and the highly structured numerical sequences suggest predictive calculations.