Thank you ! The Rainbow Mountain was an insane experience...However, if you plan to visit Vinicunca all the way from Lima, you'll spend an entire day in a bus or maybe a bit less if if you rent a car. However, the roads in Peru aren't so good and it's much better to book a flight from Lima to Cusco. Reaching Vinicunca from Cusco, by bus, takes about 3 hours. It's a bumpy ride, but well worth it :)