Suggested searches

  • Plant-based protein powders

  • Vegan leather handbags

  • Bedroom decor

  • Waterproof jackets

  • Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

Visit store
Kerb stone 52 at Knowth is more famously known as the Calendar Stone, so named by the American artist and author Martin Brennan, who says that it contains markings representing a counting system implying knowledge of the 19-year Metonic Cycle of the moon. These carvings are over 5,000 years old.

Calendar stone, Knowth

$55.98