I was reading various news articles yesterday and I came upon one about a naturally occurring eternal flame burning behind a waterfall – and science has no idea how it is produced. Which got me thinking about how a place like that would fit perfectly in a fantasy setting. Fantasy worlds often have places of wonder in them, where strange phenomena produce all manner of natural marvels.
Now given that they are rare and unusual, even for fantasy worlds, they would attract attention, and any visit there is not likely to find the place abandoned, unless in a really dangerous and out-of-the-way place, and not always then. Consider the climb up Mt Huashan in China, arguably the most dangerous tourist walk in the world. People have been travelling along narrow plank walkways hammered into the side of cliffs for 700 years there.
So even the most remote places of wonder could have visitors. You could have hermits and mystics and pilgrims there, merchants taking advantage of it to make a profit or even villages and towns built up around it. Consider something like an eternal flame. Maybe an enterprising dwarf tribe has set up there and have used it to power their metalworking business. Free fire means lesser costs coupled with superior dwarven quality. A win for all. Well, the dwarves at least.
So when creating these places of wonder in your worlds, consider how the locals would react to it – and how they might try to make a profit from it.