8-9 miles, moderate pace with some ups and downs. Hike the Historic Aqueduct from Croton/Harmon Hill to Croton Dam, then continue on level trails to Ossining. Bring lunch and water. Be prepared for snow and ice! Meet at GCT info booth for round-trip Hudson Line train to Croton-Harmon. Call leader for departure time on Friday (Jan. 3rd) evening only. Leader: Ludwig Hendel [masked]). Nonmembers $3.