Police are begging crowds of TikTok youngsters to scrap a rave this weekend at an old slate quarry where Adolf Hiler's deadly nerve gas is feared to be hidden.Invites to the illegal event due to take place tonight at the Glyn Rhonwy bomb store in Llanberis, Wales were circulated on TikTok, Instagram and Snapchat, aimed at children as young as 15.The potential rave site dates back to the Second World War and has sealed-off quarry pits, the size of two football pitches. Police are begging crowds of TikTok youngsters to scrap a rave this weekend at an old slate quarry...