Additional Photos:

• A closer shot of the lower adit, "Tunnel #2".
  
• Another similar shot of "Tunnel #1".
  
• From inside Chasm #1, looking out to western side rim (person is standing on edge).
  
• Standing on western rim of Chasm #1, looking into chasm.
  
• 3-story wooden manway structures deep inside Chasm #1.