Piedra Blanca  is a small community found in a stunningly beautiful rainforest valley in Bolivar Province, Ecuador. The community has traditionally lived by agricultural farming, fish farming and logging. An ecotourism project now provides an alternative to logging as the locals accompany tourists to the forest, local cultural sites of interest, other local villages and on rafting expeditions of pre-Inca design.
It's a 60 - 90 minute uphill walk, or ~$10 ride if you can find someone to drive you, from San Luis de Pambil.
Toucans, hummingbirds, butterflies, and a plentitude of other rainforest animals, waterfalls, etc.
Local reforestation charity CRACYP 
Trek in the forest or up to the white rock (piedra blanca) with a local guide. Birdwatching. Visit Indigenous communties. Go rafting in ancient design rafts. Visit Aguardiente farms and distilleries. Visit the tropical rainforest. Visit local markets. See a local shaman.
The local aguardiente, for which the region is famous. Bolivar province is well known for having some of the most potent, high quality aguardiente in all South America.
In the Piedra Blanca Ecolodge. In the hotel at San Luis de Pambil. Family homsestays can easily be arranged.
Visit numerous local indigenous towns.
Head downhill on foot (~60 minutes) or on a hired horse to San Luis de Pambil. Stay there for a few days - Eco-Friendly Farmstays  - then take a bus out to Quito (~6 hours), Guaranda (~5 hours), Santo Domingo de los Colorados (~3 hours) or Guayaquil (3-4 hours).