The Brazilian mountain biome would be usually found in the jungles. There would be a lot of mountains in the biome. About 1,000 blocks high, Aconcagua is the highest mountain, with other mountains such as Mount Ojos Del Salado, and Monte Pissis, with a new tree would be the black mangrove, growing on small islands in the lake on the mountains. Lastly, I want to say my 2 mob ideas living there the spoonbill (as tall as a cow) and Guanaco ( type of llama; as tall as the wither) besides spitting, the guanaco would have a new fighting technique: kicking. They would turn around and kick you with their back legs, giving you knee cramping for about 5 seconds. You would only be able to sneak.I love this idea!