There is a really fantastic new organization called Fundacion En Via (www.envia.org) that is running microfinance tours to help women living around Oaxaca get out of poverty. You meet with local women who are applying for their loans and then En Via uses 100% of the groups' tour fee to give them women interest-free microloans.
It is a phenomenal way to get to connect with local women and get a very inside look at life in Oaxaca, and also a concrete way to give back.
The best thing I've done in Mexico!

















