Blast Pen 04

Blast Pen 4 from an Aerial Photograph of the Airfield from May 1947

Historic England

Blast Pen 4 from an Aerial Photograph of the Airfield from April 2020

Google Maps

Blast Pen 4 Front from October 2018 showing back-filled bays.

Neil Broughton

Blast Pen 4 Front from September 2018 showing back-filled bays.

Neil Broughton

Blast Pen 4 Rear from May 2021

Neil Broughton

Blast Pen 4 Rear from January 2021.

Neil Broughton

Blast Pen 4 Rear from June 2021 showing sloping entry ramp.

Neil Broughton

Blast Pen 4 Rear Doorway from January 2021 showing three element lintel.

Neil Broughton

Blast Pen 4 from May 2017 showing exposed shelter.

Neil Broughton

Blast Pen 4 Right Doorway Roof from October 2020.

Neil Broughton

Pen 4 is the most northerly of the pens on the eastern side of the airfield and faces west.
Today, this pen has been infilled with earth and rubble.
The pen is of the smaller type found at Kenley, the original two bays would have been approximately 16.5m x 16.5m each.
The front doorways are buried under the infill. A large steel door secures the rear doorway.
All three doorways have three-element lintels.
The rear retaining wall is of concrete construction, 51m long and 0.5m thick at the top. It has a slope of 10-12 degrees and is 2.5m tall at it’s highest point.
Access to the rear doorway is via a concrete slope faced by a single thickness brick cladding.
The interior shelter is of unknown construction, but is believed to be made of semi-circular corrugated iron sheets overpoured with concrete.
The front wall of the now missing centre section did not have a buttress, just a simple wall probably of one brick depth with various tie-bars added for strength.