Torca de la Laureola

T13 is located 70 metres lower than T10 and has noticeably wider passages, and is therefore easier to travel through. The continuation of the Nouvelle branche is a long meander interspersed with shafts, whose longitudinal profile does not show a significant gradient. The Schéhérazade meander sometimes has narrow passages that require exhaling to reduce the volume of the ribcage. The end of the meander is at -1043 m at the top of the Aladin shaft (P82).

In 1984, a promising pit (T10) had been discovered and explored down to -310 m. In 1985, its exploration was continued down to -823 m in the middle of a vertical section, stopped for lack of ropes (SCS, 1985). In 1986, the promising pit of T10, named Torca de la Laureola (alt.: 2042 m), ends earlier than expected and a bottom is reached at -863 m in a vertical branch. In 1987, around -450 m, the union of the two T10-T13 networks is effective; at the same time, the explorations in the new branch of T10, provisionally stopped around -490 in 1986, continue down to the promising level of -769 m. In 1988, the continuation of the Nouvelle branche of the Torca de la Laureola (T10) is explored from the entrance of T13. The depths reached in this Nouvelle branche require logistical resources; a bivouac is set up around -755 m. The furthest point reached during the expedition is at the -1125 m level, still at the top of a shaft: it is not yet the bottom of the pit.