Numbering Conventions

Eastern Massif caving expeditions


The original LUSS sites were marked either in dark red or orange paint with a T designation (with the exception of caves 1-50) e.g. T999. A few others may also have the designation, the club and the year e.g. T999 LUSS 78.

In the majority of cases the paint has faded considerably and is difficult to find / decipher.

A number of major cave sites are also marked with a metal tag with the same designation format (ed. I have never found one of these!)

Due to the nature of early exploration and the large groups undertaking surface work there are obvious gaps between number sequences. 


KAMI sites are numbered according to the area and then the number. 

The sites are not always marked, so location co-ordinates are required.  (there are overlaps / numbering changes between original LUSS sites and subsequent KAMI work.  In general KAMI used EUR50 rather than WGS84)

VA – Valdominguero
CS – Cueto de los Senderos
GA – Grajal de Abajo
PB – Pico Boro
HO – Hoyo Oscuro
SC – San Carlos
AN – Andara
M – Mancondiu
S – Samelar
VL – Vaho de Lobos
RT – Revuelta del Tejo (but also used to denote ‘Other’)
HE – Hoyo Evangelista
SN – Samelar (North) – La Gobia area

Tresviso Caves Project

The recent expeditions have continued with the old T designation, beginning from T500. If suitable, gaps between numbering are used.


RCA – original mining company markings
X – original mining company markings
FT – LSD – French exploration in 1980’s, mainly Valdominguero area (ed. FT stands for ‘French Technique’)

Spanish Vs English

A lot of the caves and corresponding areas are called different names by the Spanish, compared to the original English (mainly LUSS) names.  The following is a guide to the main ‘translations’, further details contained in the cave database:

Cillorigo de LiébanaRegional name for Andara range
Caseton de AndaraThe White House refugio
Pozo de AndaraThe Lake Depression
Vegas de AndaraThe Sara Depression
Pico Grajal de Castillo, Grajal de AbajoThe Grajal Depression
Pico Boro and Picu del BoruPico Moro
Minas de Mazarassaarea of ‘mines’ above the White House
Cueto de los Senderos56 Depression
Valdediezma / ValdelafuenteValle de Valdediezma
Jitu de EscarandiThe ‘crossroads’ (now a car park)
Torca del Cueto SenderosSima 56
Torca del Picu BoruFlowerpot
Torca del Cueto del los CalabrarosDossers Delight
Torca de BranarredondaFallen Bear
Cueva del Nacimiento (de Rio Urdon)Cueva del Agua