I would love to have a Brazil get together sometime. My area is very different than what most people think of when Brazil comes to mind. Central Brazil is great for survival training because it has very varied terrain and conditions. Conditions change with elevation and time of year quite a bit. The place I use has lowland hardwood forests that make for passable jungle, open cerrado (scrubland like in these photos) and mountain terrian that runs up to about 6000 feet elevation.
If you are thinking AMAZON you would be disappointed. The Amazon is Brazil´s dominant terrain feature but only in the Amazon. The rest of Brazil is as varied as the US in terms of terrain types, even including deserts. About the only thing you won´t run into is snow, but that won´t stop you from confronting hypothermia. Mac
ETA- These photos look green because we are in the end of rainy season now. In a few months the land in these pictures turns into a virtual desert but without the heat (winter here is dry season). By October that stream in the forest is just a trickle and all the springs and seeps are dry as a bone.