The Tregiffian entrance grave in Cornwall contains a carved portal stone with 25 cupmarks—13 round and 12 oval shapes—possibly encoding a lunar calendar. A solar year contains roughly 12.37 lunar cycles, meaning there are typically 12-13 full moons and 12-13 new moons annually, not a fixed 13 new moons and 12 full moons. The stone was positioned above the bones of ancestors placed in the entrance grave. Death, life, moon, sun and seasons were interconnected for these ancient peoples. ⚪⚪⚪🌙🌙🌙🌙🌙🌙🌙🌙🌙🌙🌙🌙
Tregiffian carved stone encodes lunar months with 13 oval and 12 round shapes
EnglandGeneral
Key facts
- Tregiffian entrance grave contains a stone with 13 round shapes and 12 oval shapes carved into it
- 13 represents the number of new moons in a solar year
- 12 represents the number of full moons in a solar year
- The stone was positioned above the bones of ancestors placed in the entrance grave
- Chunquoid dolmen has winter solstice sunset alignment into Carn Kenidjack cairn notch
- The sun has only moved about half a degree in 5,000 years, making these alignments still functional
- Excarnation practice involved placing dead bodies on dolmen capstones for birds to remove flesh before bones were buried below
Site mentioned
Sources
megalithomania.co.uk
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