Also called the "Banshee Veins" or "Wailing Digs" the term "Singing Mine" refers to the Vibrosteel mines found predominantly in Sahar and Orientalis.
Existing at once in the mortal plane and upon the plane of Fire, the Grand Pyre of the Phoenix is the ultimate testament to the power of the Lord Zevarith.
What if interplanar travel was not as simple as a spell. What if it required the use of certain gates, which were not only hard to find, but difficult to access, and dangerous to use.
Sesna’s Volcano holds one such gate.
Teenagers who run away from home to live in the wilderness may become feral. As they become more and more feral, they gain some supernatural powers (a la Peter Pan - ability to fly, things they imagine come true - possibly quite powerful), but at the expense of their humanity and ability to speak, comprehend complex subjects, etc. Maybe they have a leader: the most feral of them all.
A regression into a fantasy childlike state.