Baalbek’s three trilithons measure about 19m long, 4.2m high and 3.6m thick. Common estimates put each at 750–800 metric tonnes—about 30 times Stonehenge’s heaviest sarsens and roughly 8–10 times the largest Great Pyramid blocks. The stones came from southern quarries about 1km away and survive roughly 9m above the courtyard on massive supports. They originally formed a monumental, visible entrance and were later enclosed by surrounding Roman masonry; they were not buried foundation stones. No surviving Roman text explains their transport or erection. The video argues that erosion shows they predate Rome by thousands of years; accepted archaeological dating does not support that claim.
Baalbek Trilithons: 750–800 Tonnes, Transport Still Unclear

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Key facts
- Each trilithon measures about 19m long, 4.2m high and 3.6m thick. Common estimates put its mass at roughly 750–800 metric tonnes, although some popular sources give about 900 tonnes.
- Compared with Stonehenge’s heaviest sarsens and estimates for the Great Pyramid’s largest blocks, the trilithons are roughly 30 times and 8–10 times heavier, respectively.
- The stones came from the southern quarries roughly 1km from the complex. Their close-fitting joints and elevated position on massive support blocks are well documented.
- The trilithons originally formed a monumental, visible entrance and were later enclosed by surrounding Roman masonry; they were not concealed foundation blocks.
- No surviving Roman account explains the transport or erection of these particular blocks. Roman cranes were far too small for these loads, and the frequently quoted 60-ton ceiling is not a securely established universal limit.
- The video argues that differences in erosion show the trilithons predate Rome by thousands of years. The trilithons are generally dated to the Roman imperial phase of the sanctuary, and the erosion argument does not establish an earlier date.
Sources
The Largest Stones Ever Quarried - Select Stoneselectstone.com
They include three 900-ton limestone blocks – the famous Trilithon of Baalbek ... Why are the Trilithon stones now virtually hidden beneath ...
More from Baalbek: ancient stone construction hi-tech. | Nota Beneeugene.kaspersky.com
These mammoths are called the trilithon of Baalbek. Three colossuses weighing… 800 TONS EACH!!! Again: hard to imagine what that looks like ...
Baalbek Stonesen.wikipedia.org
1,650 t). These are the first, third, and tied fifth largest known stones ever quarried in human history. They are believed to have been intended for the nearby ...
Baalbek trilithon - Watersmithswatersmiths.com
Three stones were moved onto a stone podium, and these limestones measured about 4m x 4m x 20m, and each weighed 800 tons.
The Largest Stone In The World | The Velvet Rocketthevelvetrocket.com
This is an abandoned Roman quarry (which I thought was interesting by itself) found within the Lebanese city of Baalbek: roman quarry.
Trilithon of the Temple of Jupiter at Heliopolisdennisrhollowayarchitect.com
1157 meters (3795.93 feet) above sea level. Materials of Trilithon: Stone. Data or this CG model: 1. Quasar, Gian J., Baalbek - A Colossal Enigma,
How Were The Stones Of Baalbek Moved?historicmysteries.com
The three stones that seem otherworldly are termed trilithon. Each of these large stones alone weighs around 750 tons (680 tonnes). While the ...
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