Unless the Scout shows more food resources and good ones, I think the right move is to settle in place. The tile 1N of the Corn seems to be forest, so that would give us 6 Forests (Not counting the Deer). Normal Speed Stonehenge is 120 hammers.
So here's the plan I suggest if we want to go for Stonehenge:
Tech Path of Bronze Working -> Mysticism -> Agriculture
Worker -> Worker -> Stuff (Work Boats, probably) -> Stonehenge
Use one forest to chop out the second Worker quicker
Use the other 5 Forests to get 100 hammerd into Stonehenge
Stonehenge can then either be quickly slowbuilt or, my preferred option, immediately whipped to completion, or can be started on soon enough that 100 hammers finishes it.
So here's the plan I suggest if we want to go for Stonehenge:
Tech Path of Bronze Working -> Mysticism -> Agriculture
Worker -> Worker -> Stuff (Work Boats, probably) -> Stonehenge
Use one forest to chop out the second Worker quicker
Use the other 5 Forests to get 100 hammerd into Stonehenge
Stonehenge can then either be quickly slowbuilt or, my preferred option, immediately whipped to completion, or can be started on soon enough that 100 hammers finishes it.