Giant's Causeway giant among giants. He flees back to Scotland in fright, destroying the causeway behind him so that Fionn would be unable to chase him down. Across the sea, there are identical basalt columns (a part of the same ancient lava flow) at Fingal's Cave on the Scottish isle of Staffa, and it is possible that the story was influenced by this. In overall Irish mythology, Fionn mac Cumhaill is not a giant but a hero with supernatural abilities, contrary to what this particular legend may suggest. In "Fairy and Folk Tales of the Irish Peasantry" (1888) it is noted that,
Cave of the Crystals Cave of the Crystals Cave of the Crystals or Giant Crystal Cave () is a cave connected to the Naica Mine at a depth of , in Naica, Chihuahua, Mexico. The main chamber contains giant selenite crystals (gypsum, CaSO·2 HO), some of the largest natural crystals ever found. The cave's largest crystal found to date is in length, in diameter and 55 tons in weight. When it was accessible, the cave was extremely hot, with air temperatures reaching up to with 90 to 99 percent humidity. The cave is relatively unexplored due to these factors. Without proper protection, people could