QuestionsGreat houses of Chaco CanyonDoes the Sun Dagger also mark the 18.6-year lunar standstill cycle?Answer
Answer · Great houses of Chaco Canyon
At moonrise the eastern slab's shadow marks the moon's minor and major standstills on the large spiral, and…
At moonrise the eastern slab's shadow marks the moon's minor and major standstills on the large spiral, and the site was used to follow the 18.6-year cycle.
Where it stands
DisputedTwo pieces of evidence for, two against. It needs two reviews to be accepted.
What it predicts
- The shadow edge falls on distinctive points of the spiral only at the standstills.
- Chacoan building or ceremony is timed to standstill years.
What would rule it out
- Shadow-edge positions at the standstills shown to be no more distinctive than those on other dates.
Evidence 2 for · 2 against
FOR
FOR
AGAINST
The questions it answers
Most likelyThe lunar shadow positions are by-products of the slabs' shape; the site was not used to follow the…
Cite it
Mysteries Department. (2026). At moonrise the eastern slab's shadow marks the moon's minor and major standstills on the large spiral, and… [Answer ANS0D9KVMYY1XT5]. https://mysteriesdept.com/r/ANS0D9KVMYY1XT5
@misc{mysteriesdept_ans0d9kvmyy1xt5,
title = {At moonrise the eastern slab's shadow marks the moon's minor and major standstills on the large spiral, and…},
author = {{Mysteries Department}},
year = {2026},
note = {Answer, catalog key ANS0D9KVMYY1XT5},
url = {https://mysteriesdept.com/r/ANS0D9KVMYY1XT5}
}