…on the beach!
These are rose hips from the Rosa Rugosa bush which is native to eastern Asia but loves it here on Cape Cod! I posted a picture of the fuschia roses that bloom earlier in the summer here. It is sometimes confused with the Beach Plum which is native to Cape Cod and is sweet enough to be eaten whole.
Rose hips are high in vitamin C and antioxidants and can be used to make teas and jams. If you are lucky enough to have access to some you can find a list of recipes here!