Fairy Tail Vol. 41 (manga)

Fairy Tail visits a town of giants frozen in magical ice that Gray can't dispel and Natsu can't melt! At its heart is supposedly an Eternal Flame... but how can a flame be frozen? And they're not the only ones after the town's secrets. Three treasure hunters block their path, while an old nemesis lurks in the shadows. To top it off, a magical trap makes all the Fairy Tail wizards' problems seem much bigger!