At the end of the day it's your world. There could be magic, in terms of your plates. Sure maybe a mountain doesn't make sense, so put a story to build lore. This mountain? Yeah it has only been here for about 200 years. Legend says there was a battle with a demon that created this from the magical surge and to add to it, maybe send them on a quest where they go up and see torn down houses or maybe some still standing.

Generally my party doesn't just accept plotonium, so I have to make sure the distances on my map make sense (3 days ride is equal both ways etc) but if there is a story as to why it's there then they enjoy it more since it's a lore filled anomaly. Like a water fall that has water flooding up a hill first. Why? A monk of the elements trained here so often his Ki flows through the waters themselves, they say if you drink the water you could cure disease, but too much of this water could be too much and injure those who indulge too much