In the right conditions the ascent of Roche Paillon from the Refuge des Ecrins is a beautiful grade 2 snow and ice climb. However, in recent years during the summer the gully leading to the summit loses it's snow, making it an unprotected scramble up tottering shale. Likewise the continuation along the arete leading to Roche Emile Pic is a super tour given the right conditions, but technically tricky and dirty later in the year. Best to go in late spring or early summer.
Refuge des Ecrins is situated at the foot of Roche Paillon, or Refuge du Glacier Blanc about 2 hours walk from the start of the climbing.