Digswell

 

Viaduct,

40 arches over the Mimram, 1,490 ft long, old houses under it east coast mainline impressive.

chalk cavity.  During the construction of the Mimram outfall -sewer an excavator opened a hole seeveral yards in diameter in the chalk. This led to a chalk chamber 10 ft. high and 10 ft. in diameter.   Three 'tunnels led off, each some four feet  wide and seven feet high.   One of these led to the remains of an original shaft.entrance.   Pickmarks were seen and there were flints scattered about.   There was some debate as to whether it was natural in origin or a flint mine, but the most likely explanation is that it v/as a marl pit or denehole.  

Digswell House

Hardings

United Reformed Church

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