[In Photos: One-of-a-Kind Places on Earth] For the next two decades, very few people visited the cave, Jaubert said.
He thinks part of this may have been due to the death of the original researcher, archaeologist Francois Rouzaud.
Metro’s subway cars normally carry some 163,000 commuters each weekday, but last Friday the transit agency turned the Red Line into a ride through the Tunnel of Love to celebrate Valentine’s Day. And it went a little something like this: After signing a release waiver, participants wear a pink wristband and board the first car of the Union Station-bound train (or last car of the North Hollywood-bound train), which is decorated with Valentine hearts on the windows.
It was Metro’s first “Speed Dating on the Red Line” event, which gave relationship-seeking subway riders a chance to find romance on transit. ” said one of the orange-vested Metro staffers that greeted me on the Vermont/Santa Monica station platform, wearing a red heart-antennae tiara on her head. The whole idea was to take a seat and take two minutes to chat with someone.
Additionally, he said the cave is challenging to access, not only physically but also because it is on private property and there are many conditions that need to be met in order for the owners and the French Ministry of Culture to authorize new research.
In 2013, using 3D-surveying equipment and magnetic measurements that record anomalies caused by heat, researchers were able to map both the stalagmite structures and the burnt remnants.
In 1995, some of the burnt bone was dated using carbon-14 dating, a technique that measures the ratio of carbon-14 to carbon-12; that ratio indicates about how long an organism has been dead.As a single dude who hasn’t been in a serious relationship in several years (uhhh, there’s no need to explain why here), I figured…why not. Participants were free to move to another seat or another train.But without a governing clock anywhere, you could pretty much guess that whole two-minute thing went out the window.Through a technique called uranium-series dating, which relies on the breakdown of uranium to thorium, they were able to estimate when the stalagmites were broken and moved into the circular formations.They found the installations are approximately 176,500 years old (give or take 2,000 years).