And, if it were, what causes led to its deforestation? The climate of Britain was not, we know, more sheltered and temperate in old days than now, so it seems necessary to suppose human agency to account for so great a change. There is one theory, ingenious but fantastic, which asserts that the whole forest was felled to provide timber props for the mine-workings of Devon and Cornwall. Whether this took place in Celtic times, when the trade with Phoenicia was at its height, or subsequently--in which case it is strange there is no historical record of so remarkable a fact--or whether those prehistoric peoples who built huge camps and erected mighty monoliths were yet capable of so stupendous a feat as felling the timber of sixty thousand acres, and carting it over roadless country, is at least open to question. There is another theory, that the Romans in their struggle to subdue the Britons, who took refuge in these wooded fastnesses, fired the forest, and burned them out, as they are supposed to have done with Hatfield Moor in Yorkshire, which, now a peaty moor, was 12,000 acres of forest land until Ostorius, having slain many Britons, drove the remnant into the forest and destroyed it. An ingenious gentleman, in support of this theory, instances Cow Castle (or Cae Castle), near Simonsbath, which is a large British camp in the centre of Exmoor, and juxtaposes with it Showlsborough Castle, a few miles away, just beyond the limits of Exmoor, which is held to be a Roman camp, and where certainly two Roman swords have been found within recent years, advancing this as proof that a serious campaign between Romans and Britons was fought across Exmoor. All these are interesting speculations; one hesitates to dismiss a theory because of its apparent unlikeliness, until it has been proved wrong, for in this unrecorded past of ours so many things are possible; nevertheless, it seems to me difficult to believe that the Romans would have or could have burnt forty to sixty thousand acres of woodland--above all, in a climate so humid and a country so well watered as ours.