The sun was on the verge of setting before the erstwhile passengers of the last run trudged wearily to the summit. By that time those awaiting them had some inkling what had happened, thanks to an impulsive young pegasus colt who'd swept into a breakneck flight downhill, shouts chasing fruitlessly after him. He'd returned much later, worn out and a little dehydrated, with the news a connecting rod had failed spectacularly, destroying a critical drive component and, as it thrashed, rupturing the main tank; the whistle's distress call had sounded with the last of the steam pressure.