[Doctor Stochastic]

A joke that would require heavy-duty moving equipment to get the boulders into the branches.

That's assuming a rope to be heavy-duty-moving-equipment.

[freebilly]

That's assuming a rope to be heavy-duty-moving-equipment.

Don't forget the heavy-duty-moving-equipment pulley....

[Iris7]

Cool tag line.

[Jeff Chandler]

That's assuming a rope to be heavy-duty-moving-equipment.

Excellent point. Ask a professional freight handler how much effort it would take to raise and place a 200 pound object into a tree. It's really not that difficult.

Of course that brings up the subject of people with too much time on their hands.

[pt17]

That's assuming a rope to be heavy-duty-moving-equipment.

Yup. With some really good rope and pulleys, getting a boulder into the fork of a tree isn't much of a deal; however, the mystery of the thing's more compelling than simple physics.

[SauronOfMordor]

That's assuming a rope to be heavy-duty-moving-equipment.

In the picture, there are several sturdy branches above the point where the rock sits. Some rope and block-and-tackle gear would get the rock up there with an afternoon's work and a bit of climbing

[Osage Orange]

Geesh....I've hauled deer stands up 20' trees that felt like they weighed 200 pounds..!!!