Not really. I have seen bolt cutters used to explore old mines etc.
That makes sense if it's old mines. There's always be the hope of coming away with something of value. I can't imagine that an old tunnel would provide the same incentive. The only reason to use an old tunnel the way I see it is to engage in illegal activity, like breaking into a building without being seen. Well, that could provide something of value also, but it just doesn't sound that innocent.
"Not really. I have seen bolt cutters used to explore old mines etc."
Their apparent destination was a storage room marked "biohazard," and they had a stoppered vial in their possession. This was no mere prank.