A Dodd is a hill in Britain at least 500m high and under 600m that has a drop (relative height) of 30 metres or more on all sides. There were 1340 Dodds at the end of 2015.
The complete list of Dodds is still being refined and has never been published. It is a co-operative effort involving several people, now largely co-ordinated by the editorial team of the Database of British and Irish Hills, notably Jim Bloomer and Chris Crocker. The main researchers for the list have been Michael Dewey (hills in England and in Wales), David Purchase (hills in Southern Scotland), Clem Clements, John Kirk, Tony Payne and Rob Woodall (hills in the highlands and islands of Scotland), aided by several survey results from the GJ Surveys team and Alan Dawson. More information about Dodds is available in these sources:
No-one has climbed all the Dodds as yet, though Rob Woodall had climbed over 1000 of them by the end of 2015. Some people have climbed all the Dodds in England, in Wales or in Southern Scotland. The name Dodds was originally derived from DOnald Deweys, Deweys and Scotland, but that acronym is no longer in use, so the list is simply the Dodds.