West Marin residents packed the Dance Palace on Saturday to express their outrage over a settlement deal that will shut down all the dairies and nearly all the ranches in the Point Reyes National Seashore, bringing a historic era to a close.

At a hastily convened town hall hosted by Rep. Jared Huffman, representatives of the county, the National Park Service and environmental groups presented the results of a three-year negotiation to resolve a lawsuit…