The descent from Lares is a good way to acclimatize. The insane paved road from Lares past Pampascorral and Morras with its Sahuaisiray glacierview at 3850m is a feast for the eyes in itself. You can marvel at how the glacier has carved up the mountain and the valley. The final pass at Abra Lares is flanked by Chhullunkunayuq and an un-named peak and is almost always cold and windy so again, be forewarned.