The Times - Saturday, March 07, 1891
Considerable interest has been caused at Dover by the discovery of an extensive range of caves in the cliff to the eastward of the town. A portion of the face of cliff having been knocked in, the entrance to a cave was discovered. Candles were procurred, and investigation showed that the first cave led into a long passage, which ran under the cliff at the back of Athol Terrace houses, while there were a number of other caves and passages branching off from it in different directions. The passages are tunnelled in the cliff beneath the castle, and it is stated that they were closed up by the military authorities at the time of the threatened French invasion. The Royal Engineers department have taken possesion of the caves, and they will again be closed up.