Train to Grenoble or Briancon, then by bus to Villar d'Arene.
Bus information line: www.info-ler.fr, Tel: 0821202203
The refuge is accessible only to mountaineers by its length (1800 m elevation, 5:30 to 6 hours walking up ) and difficulties (glacial and rocky passages) such access constitutes in itself an F. mountain running difficulty .