The best way to climb it is by its east side. You'll have to arrenge private 4x4 in order to get to Amawaya ($us 250 one way), hire mules and walk uphill on a side of Chiquini river (4 to 5 hrs). A quite strong team could summit on the second day, a higher camp near to the glacier is recommended though. The main problem with any way up or down the peak is finding a route through the innumerable crevasses, from high camp go uphill on the left side and try to get to the ridge that is in front of you, once on the ridge follow it to the summit. Descent the same. Make sure to arrenge transportation for the way back in La Paz. You should count 5 days for this climb and probably consider a backup day as well. For further information contact Bolivian Journeys on Sagarnaga 363 in La Paz or firstname.lastname@example.org contact Marco Soria
Thanks to Marco Soria for this description.