A warning sign situated on a beach in Michigan has struck fear into holidaymakers.
What was once called 'a fun trip to the beach', could turn into a $3,000 rescue mission if your cardio levels aren't up to scratch.
On the face of it, the Sleeping Bear Dunes National Lakeshore - located along the northwest coast of the Lower Peninsula of Michigan - features outstanding natural features, including forests, dune formations and ancient glacial phenomena.
However, on the beach area lies a unique 137 meter sand hill, which leads to the bottom of the lake.
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And the only way out is to climb back up.
A sign located at the top of the hill warns beach-goers of what will happen if they fail to make it back up the hill.
It reads: "Warning! Avoid getting stuck at the bottom.
"The lake levels are high - the only way out is up.
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"Rescues cost $3000. Keep yourself and our rescuers out of danger."
Taking to TikTok, user Chef Meff shared a now-viral video of people struggling to make it back up the hill.
"$3,000 fine for those who don't make it up the sand dune in Michigan," the TikToker writes on text overlaying the video.
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Meff then zooms in on a poor guy, on his hands and knees, struggling to make his way back up.
"You can do it!" he adds.
"Don't give up when you are so close (cry face emoji)."
It's safe to say that pretty much everyone in the comments was in agreement with the challenge ahead.
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One person was convinced that it was the hardest thing they've ever done, writing: "I can bike 50+ miles a day with 25+ pounds of cargo and wasn’t able to make it up that dune."
Another added: "My toxic trait is thinking I can do this with no problem."
"I made the mistake as a teen running to the bottom... I was fit and it still took over an hour and questioning life," a third said.
"I ran down as fast as I could it fun when you are going down and then you have to climb back up I took me like an hour and I only went 1/8 down," a fourth wrote.
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While someone else also explained: "The issue isn’t the distance. It’s the sand. Every step is only a half step because you slide. It’s like walking in a foot of snow."
Yep, I'll stick to my stoney, gray and flat beaches thank you very much.