In an era of SUVs scouring the land, it’s good to read a book about the rewards that come on foot, through careful observation, a reminder that the only ownership is attention . . . In The Salt House, Huntington walks the same square mile of dunes over and over again and finds the world there. She gives us what she discovers, like beach wrack, each observation carefully picked and weighed, kept in the pocket for when we need it most.