Lost Chao Locations
Locating the Ancient Ruins:
Make your way to Church Mountain and you will find a rocket, which will fly you directly to the top of Pumpkin Mountain! Go down one level below and you will find the Ancient Ruin.
Finding the Lost Chao:
Activate the ruins with the Mystic Melody and some platforms will spawn above Pumpkin Mountain. Jump and glide along the platforms and you will then see some more floating islands further ahead. Glide over to them and climb up. Keep going forwards and you will find the Lost Chao on the last platform.