You can easily reach this line using the summer ski lifts on the glacier or taking the Klein Matterhorn cable car- make sure you have the ski pass that includes Zermatt. From the top station of the Klein Matterhorn, once you have left the tunnel, go straight in front of you, side stepping a bit or pushing with your poles. Then you will enter a gentle section where you can enjoy some wide turns. The slope will get progressively steeper (never too much) while you approach the central part. Here you can either follow a wide couloir (in front of you) or keeping your left you can ski outside of it- multiple lines possible! The line will end on the slope that runs down to Plan Maison.