Mule train heading up the South Kaibab trail. What do the mules carry? All the supplies for Phantom Ranch are carried by mules with the exception of the heaviest things that are helicoptered in. The US mail is also transported by mules... and it is one of the last places where mail is delivered via mule.
This is just so amazing! What a fantastic trip you are/were on! I have tons of questions regarding your itinerary for South Rim. Maybe some day I can email you?