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The 'Internal Fire' Museum of Power is located at Tan-y-groes, Ceredigion. SA43 2JS.
A friendly museum near the west coast of Wales. Originally dedicated to internal combustion engines, mainly heavy duty oil (diesel and paraffin/kerosene) and gas engines, it has expanded to include a number of historically significant stationary steam engines. Currently (2019) eight of these engines can be run on steam
Photos and details of the museum’s core collection are available online here