I used to live in Mata Hambre...
In Cotui area we seem to have many describing trees, vegetation, animals, etc. La Mata (There used to be a big old tree there), Los tocones, La bija (paprika tree), La piedra, los higueros, etc.
I do know the origin of at three (newer) towns around there. One is called Canta La Rana because the area used to be rice farms which of course had tons of frogs thus "where the frog sings". Another one is Inespre due to the fact that there used to be an Inespre silo there...and my favorite one of all "El Pescozon" - The slap / The smack. The government built a bunch of houses for people who had lost theirs during hurricane David (1979). Of course some of these went to government cronies instead of the people who really needed them. One guy got so furious that he was left out that during the ceremony to give people their keys to the new houses he smacked the cr@p out of the government official who was giving them away. Thus from that point forward this is known as "El Pescozon".