title: Joseph Delteil (speleologist)
text: # Joseph Delteil (speleologist)
  
  Joseph Delteil (21 March 1909 – 7 November 1979) was a French speleologist.
  
  Delteil trained as a carpenter before turning to speleology. In 1935, he participated in the exploration of the Labouiche underground river [fr], revealing 3800 meters of active network. In 1943 and in 1946-47, he also participated alongside Marcel Loubens [fr] and Norbert Casteret to the exploration of the abyss of Henne Morte [fr].
  
  His name is given to the 130 meter deep shaft located at the bottom of the "gouffre Raymonde", the major chasm of the réseau Félix Trombe [fr].
  
  