The first question is, "take a 3, 4 or 7 day excursion"? If my count is correct, the 4 day trip has one more outing on the skiff than the 3 day excursion. The 3 day trip explores one of the two rivers that officially form the Amazon. The 4 day trip explores the other river. In both you will do virtually the same, see wildlife from the skiff, hike thru the jungle, visit a village, its school and ...
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