Family Search have an interactive map called "England and Wales Jurisdictions 1851" showing parish (and other) boundaries with optional background maps such as Ordnance Survey. There is also a Search facility, do read the guidance notes to get maximum benefit from this useful resource. See here for further background information to assist in the interpretation of this data
Crickadarn Ringwork on the Castle Wales site
You can see pictures of Crucadarn which are provided by:
You can see the
administrative areas in which Crucadarn has been placed at times in the past. Select one to see a link to a map of that particular area.
Map of the parish of Crickadarn in the County of Brecon. 1843. J. G. Lewis, surveyor. Lewis, surveyor. Edward Fowke, Glanhenwye, Glasbury, valuer.James Williams, Pontithel, Aberllynfi, valuer. Second class map. Voluntary agreement. Commutation dated 21.01.1842. Shows foot/bridleway, waterbodies, woods, plantations, building names, mill, ring earthworks and common. 4,331 acres commuted. Apportionment by holding. Land use details and field-names given in apportionment schedule. Tithe rent charge £240 (£240 Vicar).
You can see maps centred on OS grid reference SO089422 (Lat/Lon: 52.070648, -3.330507), Crucadarn which are provided by: