I visited this WHS in May 2019. Even though I was short of time, I was determined to drive on from Durdle Door to visit the rather remote mining landscape around St Agnes. I will surely be revisiting this WHS in the near future and next time I'll focus on other sites closer to St Just.
This time round I made the most of a gorgeous bright Spring day (although chilly and windy) to hike from St Agnes Beacon to Tubby's Head. Obviously my primary focus weren't the military remains along the Cornwall and West Devon Coast but the industrial remains of this rather complete and unique mining landscape.
Even though I'm certainly not a fan of industrial heritage, this WHS is one of the best examples of a huge mining landscape - where nature has been exploited and the landscape has been shaped into a once productive industrial landscape which is still aesthetically pleasing to see and discover. The surface remains around the Wheal Coates area include a boiler pond, stamp and whim engine houses, the Towan Roath shaft pumping engine house, a stack serving flues from whim engine houses and calciners, gas engine foundations, dressing floors, an exposed section of flue from a calciner which was used for roasting tin ore (the shaft is so deep that if you throw a rock down the hole, you won't hear a sound!), a double-bayed calciner, etc.
Nature is taking over once again and several sea birds, passerines and peregrine falcons can be easily spotted. Make sure not to step on an adder while walking through the coastal vegetation! The dramatic cliffs and coast line reminded me of Cabo de Roca in Portugal. I really enjoyed my short visit here and would rank it as one of the most interesting and beautiful industrial heritage sites on the WH list.