A few days ago I made part of Foxton Inclined Plane the subject of a mystery photo. But when I was there taking that photo in 2009 I stumbled across another mystery, one which was quickly solved, though.
A volunteer was tending a device I'd not seen before: a volcano kettle.
It's a simple and effective machine. A water jacket surrounds a chimney: Fill the jacket (through the off-centre spout), light a fire underneath, and the hot gases drawn up the chimney quickly heat the water. No pressurised gas cylinder, no need to worry too much about wind. Brilliant!
If the fire dies down a bit, just drop more fuel down the chimney.
The tea made this way was to be fuel of a different sort - for the volunteers working on the Plane.
BTCV - the British Trust for Conservation Volunteers - has had several rebrandings, and is now known as TCV (The Conservation Volunteers).
Oh, and just to show that here in Norfolk we didn't quite escape the snow today (23rd March 2013) ...
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