Agbrig - Brigantes - Bridge houses are long barrow hillforts.

I dont think there can be any doubt in this.

And the Symbolic shape of the Liberty cap of the 3rd hill by the river colne (CONE) that shape is cone shaped.

Also De Lacy carved up the Hillfort post 1066 into three sections that represent the three sites. the front section is also liberty cap shaped.

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