Rafts
From the Croc Wiki, the Croc encyclopedia
A Raft is brown in appearance and is a type of platform consisting of what seems to be several logs. They will float along a path usually above a pit or cliff edge, soon after shrinking and respawning on the other end of its path. There is a Glitch in the level Leap of Faith in which sometimes the third platform will not disappear and will continuously float into the darkness.