Horseshoe has never been my first choice of venue after pulling a big block off a route there on my first visit but I found myself there after tagging along with a group of less experienced climbers. After climbing a 6a warm up route I had a go at a 6b I’d never tried, “Mind Your Head”. At the chains I found myself surrounded by disconcertingly loose rock including a terrifying Jenga-esque pillar that you could easily attempt to use to clip from of you didn’t have your wits about you. After lowering off, Iadvised my partner and all others nearby not to climb this route and kept my helmet on until we left. An hour or so later, after we’d moved on to another section of the quarry, I heard a commotion from that area and saw that both a leader and his belayer has blood coming from their heads- the leader had pulled the pillar down and rocks had hit them both. Each was conscious and they were able to get to hospital without calling out emergency services luckily. Thankfully this route was debolted by the BMC as part of work done in 2017 but few, if any, other such venues have received this treatment.