Well, I am not in Belize, but not too far. I am working on a social project in Chiapas, México. Visit Moradas Verdes
We accept volunteers with a minimum commitment of three weeks. No participation fee. The communities offer very simple food and accommodation, I share my superadobe experience with you and you bring your personal stuff, lots of energy and good-will. The work as well as the living conditions are tough. If you have problems adapting or have a “bad-back” this is not for you. Overall, it is very interesting and rewarding.
Send me an email if interested.
Note: Cato helped translate the Spanish version of my Earthbag Building Guide. (I wonder if he ever got a final copy?)