Joe Rogan Experience #2558 - Tyler Engle · Aired Sep 24, 2026
Claim summary · not a verbatim quotation
Joe read a post presenting, as backed by chemistry, independent researcher Geoffrey Drumm's theory that the Great Pyramid produced sulfuric acid, methane was extracted beneath the Step Pyramid, Khafre's pyramid produced hydrochloric acid and the Red Pyramid produced ammonia.
The finding
What the evidence shows
This is one researcher's theory, and no published evidence supports it. The post's main chemical evidence, a calcium sulfate crust in the Queen's Chamber, is contradicted by a 2026 peer-reviewed study that found the salt is mostly table salt coming from the limestone itself. The Red Pyramid's ammonia smell is usually put down to centuries of bat droppings. No study has found that any of these pyramids made methane, hydrochloric acid or ammonia.
Read the supporting source · www.nature.com ↗Quick answer & review status
Quick answer
Is it true that Joe read a post presenting, as backed by chemistry, independent researcher Geoffrey Drumm's theory that the Great Pyramid produced sulfuric acid, methane was extracted beneath the Step Pyramid, Khafre's pyramid produced hydrochloric acid and the Red Pyramid produced ammonia?
No, not as stated. This is one researcher's theory, and no published evidence supports it. The post's main chemical evidence, a calcium sulfate crust in the Queen's Chamber, is contradicted by a 2026 peer-reviewed study that found the salt is mostly table salt coming from the limestone itself. Joe Rogan said it (matched by voice) on Joe Rogan Experience #2558 - Tyler Engle, aired Sep 24, 2026, at 2:02:52. The supporting source is nature.com, linked below.
The context belongs here.
No separately verified on-air correction is recorded for this check. That is not a claim that nobody corrected it.
- Attribution
- Not independently confirmed in this record
- Editorial context review
- Not recorded; generated finding
- Coverage
- One selected claim from the episode
Revisions to this check
No dated revision is recorded here. Older checks may predate this log.
Challenge this finding or add context →Keep the evidence coming.
Follow new checks in your RSS reader, or catch up with the weekly briefing on the site.
Email signup is currently unavailable.
Prefer to catch up here? Read the weekly briefing.