This shack is where the course starts. You would climb onto the roof and choose the easier course or the harder course.
The harder route
Off this platform there will be a zip line and a giant swing
John is on the pole in the center and Tbird is in the forefront.
View from above
They hoisted that big log up there on the left and John is on the right end of the log
John is still on the right side of the horizontal log
John working on securing the log