People often think of Long Island as highly developed, and that is true is especially in Nassau County and Western Suffolk County. But Riverhead has a very small-town feeling to it and it's 77 miles or 1 1/2 hour drive to Manhattan -- roughly same the distance of Poughkeepsie to Manhattan. And there is still a quite a bit of agriculture on North Fork of Long Island as shown by the cultivated fields (brown) and hay-pasture (yellow) on the National Land Cover Dataset. There is also some agriculture in South Fork as you can see by zoomingin.

Consider taking off the NCLD layer and swapping the Open Street Map for NY Aerial or US Aerial and zooming in to explore further.