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Note: this list of places includes island features such as summits, but not islands as such.
Keadeen MountainMountainCéidín A name in Irish (Ir. Céidín [OSI], 'flat-topped hill')WicklowCounty in Leinster Province, in Arderin, Vandeleur-Lynam, Irish Highest Hundred Lists, Dark slate-schist, quartzite & coticule Bedrock
Height:653mOS 1:50k Mapsheet: 62Grid Reference: S95394 89764 Place visited by 342 members. Recently by: wallr, LauraG, nevgeoran, the-wren, mickhanney, pinchy, Gergrylls, Turlo143, abcd, Grumbler, nupat, ei7kh, ciarraioch, Prendo, briankelly I have visited this place: NO (You need to be a logged-in member to change this.)
Keadeen Mountain is not obviously flat-topped either when seen from the N (Church Mtn) or from the contours on the map. Céide can also mean a path, way or a place of assembly, fair site, etc. One of these other meanings may be relevant in this case. As it is a townland name, it may not refer to the mountain originally.
Keadeen Mountain is the 192nd highest place in Ireland. Linkback: https://mountainviews.ie/summit/186/