The Laguna Sontecomapan valley should also include a few other towns.

For technical reasons they are listed in other sections of the tuxtlas.com pages.
Villages of Laguna de Sontecomapan, Catemaco, Veracruz

Other Sontecomapan Communities
Peninsula de Moreno
a dilapidated river community high up the Rio Coxcoapan

Dos Amates
an agricultural ejido with a pretty waterfall and an ecotouristic bend

Lazaro Cardenas
a backdoor entry to the Estacion Biologica