MARK Wright struggled to hold back his panic recently as he faced one of his biggest fears.
The star is appearing in a brand new show on BBC One with dad Mark senior and his brother Josh.
Named A Wright Family Holiday, the series sees the Wright men take on a number of challenges, while ultimately reconnecting and making new memories.
But one such challenge seemed too much for 36-year-old Mark.
The star was filmed standing on the edge of an 80ft mine shaft in the pitch black.
He was ready to jump down it in all of his equipment but let out a series of high pitched squeels as he braced himself for the drop.
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Mark said: “I’m not sure how this happened again but I’m going first.
“That’s petrifying. Why does it feel so scary?”
The man in charge of keeping the Wright men safe replied: “Because it is really scary.”
Despite Mark’s fears, Mark senior was having none of it and told his son to “get it done.”
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Mark continued: “I don’t think I can do it,” before shrieking: “I can’t do it, I can’t.
“No I can’t, I went to go but I can’t.”
After shouting out “come on you mug,” he musters up the courage and plummets down the shaft while letting out a series of noises.
“My legs are absolutely trembling,” the star says, as he finally reaches the bottom.
That’s not the only challenge that had the Wright men trembling.
In another episode, Mark snr bungee jumps from a bridge.
He screamed on his way down and hung motionless above the water below, prompting Mark to casually ask: "Is he all right?"
It tickled viewers.
One said: "Big Mark is gonna be a national treasure."
Another said: "The last clip of big Mark. So funny."
A third said: "Omg poor big Mark [laughing emoji] was [probs promised a nice boys trip to the Bahamas."
During the show the men were all reduced to tears as they discussed how difficult the last number of years have been.
TOWIE star Mark's dad was seriously ill with Coronavirus during the pandemic - leaving his family worried sick.
At the same time Mark senior's brother - Josh and Mark's uncle - tragically died with the virus.
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The trio brought up his passing as Mark asked his dad whether uncle Eddie would have believed he went into a cave.
"He's here with me, that's why I done it," replied Mark, adding: "Trust me, he's here, I felt it, 1000%."