It is located at 54° 19' 13" N, 8° 22' 7" W.
Altduff is in the townland of Knocknaclassagh, which has the following subtownlands:
Altduff is in the townland of Knocknaclassagh. Interested in Geneological / ancestors who may have lived in Knocknaclassagh?
Altduff was added to OpenStreetMap on 6 Jan 2015 by NoelB.