The area behind Sandy Neck Beach is called The Great Marshes. As you've seen from prior photos, the beaches on Cape Cod Bay all have an extensive wetlands/marsh system behind them. There's one place in West Barnstable where you can drive out pretty far, down Navigation Road. The Red Dot shows where I was shooting pics one day last week.
This is an old duck camp, or maybe it's still in use, but in any event, it sits up on stilts to keep it dry from very high tides. The day we went, it was an extremely high tide but the puddles I encountered were from the rain we'd had the night before. The drive out there is on a pretty rough dirt road with lots of bumps too. I'm glad I got these pictures because there's just no way I'm taking my car back out there.
This is the end of the road where the boulders are. I wish I had taken some reflection pics but there was so much water that I was afraid we were going to get stuck.
The dunes at Sandy Neck
Hubby waits patiently while I do my photo thang.
We got out OK, but Russell steered as I slowly backed out and made the three point turn, while I used the brake and gas at his instruction, so that we could avoid all the deepest parts and even at that the car did bottom out once. I don't recommend this road for a small passenger car. I'd feel better in a truck or SUV!