Fisher-Price Thomas & Friends TrackMaster, Hazard Tracks Expansion Pack Trains climb and turn simultaneously while racing along the embankments (trains sold separately) Features unique, warped track with rock-sculpted detail Connects to other TrackMaster train sets and expansion packs (sold separately) Perfect addition to your expandable, connectable, motorized Thomas & Friends TrackMaster world Trains climb and turn simultaneously while racing along the embankments (trains sold separately) Features unique, warped track with rock-sculpted detail Connects to other TrackMaster train sets and expansion packs (sold separately) Knock down the caution signs Add even more excitement to your connectable, expandable, motorized railway