Condorito, it looks like you are already back home in Switzerland. So sorry you lost the pictures!
You might try calling the Inyo National Forest numbers to see if the camera might have been turned-in.
Here are two phone numbers:
Mt. Whitney Ranger Station in Lone Pine: 1-760-876-6200
Eastern Sierra InterAgency Visitor Center, Lone Pine: 1-760-876-6222
