Got to live one of my dreams in my group's last session.
So our party was tasked with a search and rescue mission for an expedition team that got lost in some troll-infested, magically shifting mountain range. This area is a notorious place for getting folks lost, because it will turn you around frequently; especially anyone without proper knowledge of how to handle it. It was also the location of an old abandoned dwarf city, hidden in the "safety" of the mountains. The party spent a few days to reach it, and two more navigating the winding and ever-shifting roads. We come across the bodies of a couple of dying trolls, noting that whatever they fought wasn't the expedition team, because the wounds looked like something larger had gored them.
After lighting the bodies on fire we found a cave nearby with remnants of climbing gear scattered about at the mouth, voices lightly echoing from within. We check inside and find two elves huddled in the end, one of them seemingly gone mad from the whole ordeal as he was babbling incoherently for a while until our bard managed to calm him down. We asked them about the rest of their team to hear that of the eight that ventured in, they were the last ones, then we questioned what happened to them.
As soon as we ask, a boulder comes tumbling down from above, crushing my character and our mage. The next thing we know, a fossil golem comes climbing out from where the boulder fell bringing a rock slide with it. The bard casts a spell to increase his movement speed and nopes the fuck outta there, our fighter trips while trying to avoid the falling rocks and gets caught in the slide along with one of the expedition members while the remaining one escaped. They remained stuck in the mountains until our next session, which in-game was two and a half weeks before another search party was accompanied by the GM's girlfriend (she missed out due to work, luckily for her) and our re-rolled characters.
TL;DR Rocks fall, everyone dies. Well, everyone but the bard. Lucky bastard.