Knights Templar cave discovered behind rabbit hole

There are many legends about the Knights Templar. The secretive religious sect have left behind many mysterious mysteries. They once held great power across Europe. So much so, that King Philip IV of France, who was in debt to them, and in fear of their power, literally forced them underground, having burnt many of their prominent members at the stake.
So it is interesting to hear about a mysterious 700-year-old cave that may have been used by the famous Knights Templar. The fascinating cave was discovered, a while back, behind a rabbit hole, in a field in Shropshire, England. Could this cave be a Holy Grail site? Did the Knights Templar really meet here, in secret?