From Cusco, you can hire a taxi or a rental car and go on your own to the national park where the hike to Humantay lake starts. You can also book a one day hiking tour from one of the many Cusco agencies.

Paracas National Reserve
You can get to paracas national reserve by bus from Lima. It is approximately 4 hours drive.
One Response
This lake is sooooo pretty! I saw it while hiking to the Machu Picchu, on Salkantay trek. There are some day trips as well, but if you like hiking I definitely recommend going on Salkantay trek to see this lake!