YouTuber Brendan James, 29, fell over the cave in Shifnal, Shropshire, taking his 3,000 subscribers on an adventure in the Caynton Caves, which was rumored to be used by the Knights Templar in the 17th century.

A YouTuber remained speechless as he stumbled upon what he thought was a “Knight Templar” under a tree.

Brendan James, 29, fell over the cave in Shifnal, Shrops., After a friend read about it online.

The explorer took his 3,000 subscribers on a virtual journey as he filmed himself exploring the cave.

Locals have long claimed that the Caynton caves were used by the Knights Templar in the 17th century.

Historic England described the cave as a “cave” and believe it was built in the 18th century – a few hundred years after the order of the temple was dissolved.

Brendan said he felt claustrophobic and restless while down in the cave.

The entrance is a small hole under a tree – easy for everyone to miss.

He said: “We went into it and it’s a small crawl space that leads to a huge sandstone cave.

“You would not think it would be there in a million years.”

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Brendan admitted he was skeptical at first.

Although the cave has been linked to the medical military group, it is probably a Victorian folly.

Brendan said: “There were some photos online, but nothing of importance.

“But when I went down there, it opened my eyes. It was expansive.

“Someone had been down there and made an effort to make such beautiful carvings.

“It must have looked pristine when it was first done.”

The cave is covered with graffiti, and Brendan also found a picture of a man in a “ritual room”.

He also discovered a half-fallen wall – which raised concerns about the safety of the structure.

He said, “I did not think I was claustrophobic, but I was grateful to get out.”

Brendan left the cave after about half an hour of exploring because he said he was starting to feel a little amazed.