Bristol, home of the Clifton Suspension Bridge and one awesome nature reserve that will awaken the hidden climber in anybody! There is also a secret tunnel hidden in one of the outcrops of rock which is just about big enough to creep through if you crouch. Wielding the dim light of phone before you is recommended; whilst there is a wooden runner through the tunnel to help guide you, it does get a bit crowded and I hit my head pretty hard. Definitely not for the claustrophobic! The realisation that there is over a tonne of rock above you is awe-inspiring and is likely to steal the breath slightly unless you are used to caving.
Unfortunately, I’ve forgotten its name, but I am going to chase it up and report back! For now, here are pictures!