Ellie Carren, longtime hike leader for Westchester Trails Association, Adirondack Mountain Club (Mohican Chapter) and the Friends of the Old Croton Aqueduct invited her friends and family to join her on Saturday, April 23rd for a hike to celebrate her 100th birthday. The walk, a little shy of the 6-mile round trip between her home in Irvington and the Keepers House that she regularly travels these days, began and ended on the Aqueduct at Dows Lane in Irvington.