I would recommend MaximoNivel if you are looking for a volunteer opportunity in Guatemala. People are always ready to assist and I enjoyed staying at the host family a lot: a very welcoming family and splendid food.
I volunteered for construction, so I found myself building cages in an animal rescue center. Those cages are intended for 2 huge pythons.
Sadly 4 weeks were not enough to finish the project but perhaps you are going to finish them?
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