Losing your backpack on Rinjani is stressful, but the trekking structure makes it far less likely than it sounds. On a trek with Lombok-Indonesia.org, porters carry all the heavy communal equipment, while you’re only responsible for a light day pack with personal essentials like water, snacks, layers, camera, and sunscreen.
This means you’re never far from your own bag. It stays on your back or right next to you at rest stops. The system is designed this way for exactly this reason. If you did misplace it at camp, the guides and porters know the mountain intimately and would quickly retrace the group’s movements to find it. They don’t leave things behind.
For larger luggage you don’t need on the trek, secure storage is available at the homestay in Senaru before you depart. Leave your suitcase there. The most common cause of lost items isn’t theft but carelessness, like leaving a jacket on a rock during a break or dropping a glove in the dark during the summit push.
Guides are trained to sweep the campsite before leaving, and they’ll remind the group to check their belongings. The best prevention is simply keeping your day pack zipped and on your person at all times, which is easy when the pack is light and manageable. Don’t overthink it, but don’t get careless either.
If you do lose something, tell your guide immediately. The sooner they know, the better the chance of finding it before another group passes through.

