I climbed Puncak Jaya (Carstensz Pyramid), the highest mountain in the Australasian continent. Before getting to the higher altitude scenery (very alpine in fact), I trekked across a muddy and rainy jungle for several days, I was accompanied by Papuan indigenous people, I walked past the largest gold mine in the world, eventually summiting the 16,000ft mountain (well, after a steep class-5 wall). A gorgeous adventure, yet not for the faint-hearted
Walking with rubber boots in deep mud is a demanding physical workout and the fun only continues with the river crossing: this is sometimes by means of a bridge (sort of), sometimes by practicing own balance skills on the mid-size logs laid across. Some rivers are simple streams, others are roaring masses of water probably worth a good class-4 rafting .