This is all that remains of the Birkenhead Corporation water pumping station..

When it was in use there was a large chimney and a corrugated iron building, this housed two large steam engines with 8 or 9 foot diameter flywheels. It pumped water from an artesian well, reputedly 860 feet deep, through the Thermopylae Pass to the waterworks in Bidston Road.

It is said that on a quiet night the regular thump of the water being pumped through could be clearly heard when walking down the pass.