I kept riding around until I found a hole and I jumped down into it. I fell about thirty feet. Somehow the bike survived the fall. I looked for the next hole and the next hole, until I made it down.
I recognized the red buildings of the Dragon Sect almost immediately. Everything was destroyed and crumbling. There were monsters and dungeon enemies everywhere just roaming around and destroying things.
I wasn't sure whether to fight the monsters or look for survivors, so I chose both. I killed any monsters that came near me while I looked for survivors that might be trapped by the fallen and collapsed buildings.