Encounter 13A: Lava Bridge, Part 1 (Entrance Chamber) (Unpainted), NO ANCHOR MAGNETSA grand entrance chamber leading to an elevated platform ripe for a a major battle. Note: There are two more parts that make up the entire Lava Bridge Encounter Area and that all three Lava Bridge sets are needed to build the complete encounter as shown in the Build Guide. The individual sets are built as stand alone encounters, so the Build Guide is inaccurate in some areas as the piece composition was altered so each could be built as an individual