Bronco, a tumpline is a strap that you can attach to a pack or duffel or whatever. Then the strap can be worn across the forehead or shoulders. It's an old-timey way to carry loads and some claim it's the best way to carry very heavy loads.
This from Calvin Rutstrum's "The New Way of the Wilderness" on the tumpline: "It is very valuable in the North, where it is used by the Indians for most portages. The tumpline is a 2 1/2-inch head strap to which two narrower 8-foot leather straps or lines are attached. Sometimes these narrower lines are attached to the head strap with buckles so that they can be adjusted after the pack is loaded on the back. Inexpensive tumplines can be made with a leather head strap and ropes, but they are not quite as adaptable as those with leather lines.
When carrying a load with the tumpline, place the head strap high on your forehead. The advantages of the head carry instead of the shoulder carry are the better position of the pack and less strain on the body. Your neck muscles are stronger than you realize, and with continued tumpline packing they will develop greater strength. Indians, who pack all their lives, amaze white man with their tumpline packing ability. Special feats of 400- and 500-pound carries are known, but these are exceptional. The daily packing of 200 pounds over portage trails by Indians is not uncommon."
In the Jan/Feb 2001 issue of The Backwoodsman, there is a pic on p. 8 of a guy carrying his gear via a tumpline slung across his shoulders.
Hope this answered your question.
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Hoodoo
I get some pleasure from finding a relentlessly peaceful use for a combative looking knife.
JKM
[This message has been edited by Hoodoo (edited 04-05-2001).]