http://stream.publicbroadcasting.net/production/mp3/knau/local-knau-877801.mp3
Some Grand Canyon landmarks honor politicians, some recognize explorers and even canyon guides. A promontory called Ayer Point honors Emma Ayer, the first white woman to hike into the Canyon. And one name, Mooney Falls, contains its own, grim tale. Commentator Scott Thybony has the story.