Jakey Hollow Natural Area is a fifty-nine-acre protected tract in Columbia County, Pennsylvania, north of Bloomsburg near Mordansville. Set in a small hollow along a tributary of Little Fishing Creek, it is notable as one of Pennsylvania’s smallest natural areas and for preserving part of an old-growth forest recognized by the Old-Growth Forest Network. Its Northern Conifer Forest community is defined by eastern hemlock, with beech, birch, cherry, oak, and tall white pines supporting diverse plant and bird life. Once partly logged, the land was protected by Ward Crawford and his brother in the nineteen fifties and transferred to state ownership in nineteen ninety. Today it remains a modest public natural area facing development, runoff, deer, invasive plants, and hemlock woolly adelgid.