To get back on the other side, turn left at the top of the Marquis chairlift and follow the Emeraude slope (a green one, as its name suggests!) and take the Soleil Rouge chairlift, with its black and red seats!
In this sector, the first part of the slope is the Shogun, then the Bartavelle and the Route des fermes, which you should follow to get back to the Frêne chairlift.
From up there (not recommended for snowboarders!), we suggest you head for the famous Col de la Madeleine via the blue Col slope.