Hills are a variation of mountains (possibly the same size i want mountains to be bigger!)
Also hollows and valleys (the opposite of hills and mountains)
Possible forageables.
Volcanos
Increased soil Q
lava? you decide i can't!
Ponds & surface pools
more frequent near mudflats, swamps and rivers possibly? (basing off DF drainage system
Surface pools: same mechanics and underground ones
Ponds: Much smaller (max size, 5x5)
Forageables: Pond reeds (ingredient to several new stews), watercress (seeds / flowers (see below)), other aquatic foragable for you to input...
(possible suggestion: watercress is farmed in all shallow water tiles / Dex 1 per cress)
