This became the 17th entrance into the Four Valleys System when a short excavation at the surface broke into Fridge Door Cave close to station 1800-22-06.93. (See Fridge Door Cave (1800) for prospecting in the area the previous year.) Subphones, hammering, radios and voices were all used with success at the location and excavation took place. Indeed, the long drill used at the surface was seen in action underground. The entrance (using a code that was kept back for an important site) is now gated and a narrow tube stabilises the short crawl into the system. Initially dug to allow divers much easier access to sump 3 (rather than having to dive in through sumps 1 and 2), the entrance is proving very useful in pushing at the north and eastern end of the cave.

   As the actual extra length of 5000 is only a couple of metres, all finds made in Fridge Door Door through this entrance are still recorded within site 1800. Below, the links to photos, etc chronical the opening up of the hole and a family trip to the link point with Cueva Llanío (3234, found at Easter 2023).

References: See also 1800; anon., 2023c (summer logbook); anon., 2023d (autumn logbook)
Entrance pictures : July 2023: 22nd, 25th, Digging out the entrance and installing the tube : 28th, lid installed : autumn 2023
Underground pictures :
Video : 22nd July excavating the entrance : 3rd August family trip
Detailed survey : See 1800
Line Survey :
On area survey :
Survex file : See 1800