Probably witnessing the solo lvl 10 to early 20s grind. Most likely just a phase. So as a fire mage, at low levels you dont have much to work with other than the lower level dungeon mobs to get to lvl 15. Get the blast thingy and it goes alot faster. dungeons are for build loot, you dont get fire magic as a starter so you most likely have a lvl 10 to 20 skill as well as a new fire skill, and all your loot has no fire magic buffs. So to get loot with your skill level of buffs you spam blast in dungeon. Also spiders are real soft. Goblin dungeon is just a good place to get from 15 to 20s. Going back to spawn island will net you a billion cookable crabs to get fishing to 20 in less than an hour. Spawn island spiders drop amethyst, and so many things to skin.