Again, I am delighted to be the first to review this wonderful WHS.
Huascaran NP is a truly beautiful place. I doubt there is anywhere else on Earth where you can so easily access such enormous mountains. The hiking here is truly wonderful, and hugely varied. I have spent several days walking to glaciers, lakes and valleys. I cannot recommend this site highly enough.
I am lucky enough to be writing this at a charming place called 'The Lazy Dog Inn', which is on the border of the park. From here, some of the most beautiful and least visited parts of the park are easily visited. I highly recommend walks into 'Quebrada Llaca' and 'Quebrada Cojup' (excuse any spelling).
Entry fees are a very reasonable $2 per day or about $25 for a month pass.