The big difference between Vinicunka and Palccoyo Rainbow Mountain are:
Altitude: Vinicunka: 5,036 meters, Palccoyo: 4,900 meters
Landscapes: Vinicunka: Rainbow Mountain & Red Valley. Palccoyo: Three Rainbow mountains & Rock forest
Difficulty: Vinicunka: Moredate-Challenging. Palccoyo: Easy - Maderate
Walking time: Vinicunka: 2,30 hours round trip. Palccoyo: 1,50 hours round trip