Knowth: Largest passage tomb with 25% of Europe's megalithic art and ancient calendar stone. Knowth is the largest of the three main Boyne passage tombs with 17 satellite tombs Contains 25% of all known megalithic art in Western Europe in one location Martin Brennan identified the 'calendar stone' with 22 crescents and 7 circles (22+7=29, the lunar synodic period)

Knowth - the largest of the three main Boyne passage tombs with 17 satellite tombs - holds an extraordinary concentration of megalithic art! Martin Brennan identified a 'calendar stone' with 22 crescents + 7 circles = 29 (lunar synodic period). 🌙🌀 Research showed it tracks moon phases at equinoxes.

Key facts claimed:

- Knowth is the largest of the three main Boyne passage tombs with 17 satellite tombs

- Contains approximately one-third of all known megalithic art in Western Europe in one location

- Martin Brennan identified the 'calendar stone' with 22 crescents and 7 circles (22+7=29, the lunar synodic period)

- Three crescents covered by spiral symbol may represent the three days of new moon invisibility

- Charles Scribbler demonstrated Knowth's passages track moon phases at equinoxes for predicting future lunar phases

Key Facts

  • Knowth is the largest of the three main Boyne passage tombs with 17 satellite tombs
  • Contains 25% of all known megalithic art in Western Europe in one location
  • Martin Brennan identified the 'calendar stone' with 22 crescents and 7 circles (22+7=29, the lunar synodic period)
  • Three crescents covered by spiral symbol may represent the three days of new moon invisibility
  • Charles Scribbler demonstrated Knowth's passages track moon phases at equinoxes for predicting future lunar phases
  • Western passage sunset photographed at equinox showing sunbeam striking left wall only, 11 degrees south of due west

Related site: Knowth — view location, images, and history on the Ancient Nerds map.