In 1992 the British pass the sump of Guiers Vif cave .
In 1992 the British make the junction with the Trou of the Flammes discovered in 1973 and located at the top .
In 1992 the British pass the sump of Guiers Vif cave and make the junction with the Trou of the Flammes discovered in 1973 and located at the top .