We're now a few kilometers upstream from the mouth of the river. The area is much more rugged as we are actually in the Adirondack Mountains. This has a major affect on the river, because we are closer to sources of coarse sediment (glacial debris and bedrock exposures), and the stream has a higher gradient (slope per given distance) which will result in greater flow velocities during spring melt.
As you can see from the photo above, the result is a pile of very coarse grained sediment on the outer side of a river bend. This is called an attached bar.
Now, you have the opportunity (just like the fellow in the photo) to walk around on the bar and examine it. You may wish to start at the Upstream End of the Attached Bar, then examine the Middle Part of the Bar, and then compare them to the Downstream End.