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-"Upper Pioneer" is the main trail off of the Zephyr Express side of the mountain.
The top portion is very flat so make sure to keep speed when starting out.
As you get past the flat area it will drop in to a semi-steep face that widens up for high speeds and long turns.
From here you have the choice to access multiple other trails such as "The Stash", "Hoot Owl" and "Lower Pioneer".