Discovering the Thunder Rift

So I read Thunder Rift for the first time tonight. On the whole I was pretty impressed. This is what, growing up, I always thought D&D settings would be mostly like, but they mostly weren't. Classic, compact, rife with hooks.

But I'm not without complaint-- it seems almost too tiny. I can't imagine based on the data given that there are more than a thousand humans or so in the entire region, which (if I estimated right) could be crossed in a matter of three or four days from north to south. I think if I was running it I'd multiply the size and the population significantly (with a few small villages scattered about accordingly). As it stands it feels at once too dense with monsters, and too small to explore. But that's a pretty easy fix. If I were running it, I'd also probably make it slightly easier to travel beyond the canyon (with at least a bare-bones outline of the surrounding territory). I have thoughts in place already... maybe the makings of a series of future posts?