Viewed just Teleckoje Lake and a small part of Altaiski Reserve (zapoviednik) but I must admit it is area of outstanding beauty. High mountains, nature not touched by human population, deep lakes and landscapes similar to fiords in Norway. Clear water, no pollution whatsoever, you can use accommodation in Artybash village or some cottages located on Lake shores or even a big camping site on the southern part of Lake. But be sure you reserve that in advance - its quite popular region in the summer so in peak season it may be occupied. One of Russia's must to see.