Mount Rinjani deep dive
Mount Rinjani's trash crisis is real and well-documented — approximately 2 to 4 tons of trash are removed from the mountain in volunteer cleanups each season, with much more remaining buried or scattered. The problem stems from heavy trekker volume, inconsistent operator practices, and limited park enforcement until recent years. Choosing an ethical operator that documents pack-out practices and following genuine leave-no-trace principles makes a meaningful difference.
# The Mount Rinjani Trash Crisis: An Honest Account and How to Trek Without Adding to It
Mount Rinjani has a trash problem. This is not a polite framing or an environmental abstraction — it is visible, ongoing, and documented in the photographs that occasionally circulate in international media showing instant noodle wrappers, water bottles, and human waste at and around the major camp areas. The mountain hosts approximately 60,000 trekkers per year in normal seasons, and even with most operators following responsible practices, the cumulative impact has been significant.
This guide is written from the perspective of a senior guide who has worked Rinjani for over a decade and has participated in multiple seasonal cleanup operations organized by the Rinjani Trek Management Board, TNGR, and volunteer environmental groups. It is honest about the scale of the problem, what is being done, what is not being done, and how individual trekkers and operators can minimize their footprint.
Annual cleanup operations on Mount Rinjani — typically run in February and March during the closed season — recover between 2 and 4 tons of trash per cycle. The 2024 cleanup organized by Rinjani Trek Management Board removed approximately 3.2 tons of waste from Plawangan Sembalun, Plawangan Senaru, Segara Anak lake area, and the upper trail corridors. The 2025 cleanup recovered slightly less — 2.7 tons — which the organizers interpreted optimistically as evidence of improving operator practices, though it could equally reflect cleanup teams missing material.
The composition of the recovered trash is depressingly consistent year to year:
The water bottle volume is the single largest preventable source. Almost every plastic water bottle on the mountain was carried up by a trekker who could have refilled at camp or used a hydration bladder.
Several factors compound:
1. Heavy trekker volume against limited infrastructure. 60,000 trekkers per year is significant load on a mountain with no formal waste management infrastructure above the trailheads. There are no rubbish bins on the upper mountain — by design, since bins would be overrun in days. All trash must be carried out by porters.
2. Inconsistent operator practices. While reputable operators contractually require their porters to carry out all trash, smaller operators and informal arrangements frequently let porters dispose of waste by burning at camp or burying. Burning plastic creates toxic emissions and incomplete combustion residues; burying creates long-term contamination.
3. Trekker behavior. Some trekkers, especially those on cheap tours or independent excursions, are casual about leaving wrappers at rest stops, throwing cigarette butts on the trail, or burying toilet paper carelessly.
4. Limited park enforcement. Until 2022, TNGR rangers conducted limited monitoring of waste handling beyond the checkpoints. Enforcement has improved since 2023 with periodic ranger sweeps and operator audits, but the mountain is large and resources are limited.
5. The lake situation. Segara Anak crater lake has accumulated decades of trash from camping trekkers, including bottles and food waste that floats and gradually sinks. Underwater cleanup operations are difficult and rare.
Several organizations work on the Rinjani trash problem:
Rinjani Trek Management Board (RTMB). Coordinates the annual closed-season cleanup with funding from TNGR, contributing operators, and small grants. Organizes porter teams to do the heavy lifting.
Trash Hero Lombok. A volunteer-driven organization that runs monthly small-scale cleanups along the trailhead approaches and supports broader Lombok island waste reduction efforts.
Eco Trek Lombok. A coalition of operators that have committed to documented leave-no-trace practices and transparency about their porter waste handling.
Local Sasak community groups. Senaru and Sembalun village youth groups occasionally organize cleanups along the lower trail sections, often as part of school environmental programs.
These groups deserve direct support. The cleanup operations are physically grueling work performed by local people who could be earning more from regular trekking work, and donations to the organizing groups make the operations financially sustainable.
Operator practices vary widely. The following questions, asked at booking, separate ethical operators from extractive ones:
1. "Do your porters carry all trash from the trek back down to the trailhead?"
The right answer is an unambiguous yes, with details: each trek leaves with a specific number of empty trash bags, which are returned full. Operators that hesitate, give vague answers, or say "we burn what we can" are not handling waste responsibly.
2. "Do you provide reusable cups and refillable water for clients?"
Ethical operators provide reusable steel or enamel cups for hot drinks at camp and refill water from boiled supplies at camp rather than handing out single-use plastic bottles.
3. "Do you have a pack-it-in-pack-it-out policy that includes clients?"
Clients should be briefed at the trek start that everything they bring up must come back down with them, including empty wrappers, used tissue, and food waste. Reputable operators communicate this clearly.
4. "Do your porters use the designated camp areas only, or do they make new fires and impromptu camps?"
Designated areas concentrate damage; unauthorized fires expand it. Reputable operators stay strictly within designated zones.
5. "What is your toilet protocol?"
The honest answer in 2026 is that there are limited pit toilet facilities at the major camps, and trekkers should use them when available. For solid waste away from camps, trekkers should dig a 15cm cathole well away from water sources and pack out toilet paper in a sealed bag (not bury it).
6. "Do you participate in or contribute to the annual cleanup?"
Operators that support the cleanup financially or through staff participation are demonstrating commitment beyond their own treks.
7. "Can you show me documentation of your trash policy?"
Some leading operators publish their waste management policies on their websites. Ask for the link.
Personal practices that meaningfully reduce your trek footprint:
1. Refill rather than buy. Bring two 1-liter Nalgene bottles or a 2-liter hydration bladder. Refill at camp from boiled water sources. Never accept single-use plastic water bottles at camp; if porter offers, politely decline and refill your bottle.
2. Bring a reusable cup. A small steel or enamel cup for hot tea at camp. Avoid disposable cups entirely.
3. Snacks in reusable containers. If you bring personal snacks, transfer them to a small reusable container before the trek rather than carrying individual wrappers. Less wrapper material means less waste to manage.
4. Pack out everything personal. Every wrapper, every tissue, every cigarette butt, every food scrap. Carry a small dedicated trash bag in your daypack and use it.
5. Toilet protocol. Use camp pit toilets when available. For solid waste in wilderness sections, dig a 15cm cathole at least 50 meters from any water source, cover thoroughly, and pack out toilet paper in a sealed plastic bag for disposal at the trailhead.
6. No micro-trash. Watch for the small things: gum wrappers, snack-bar foil, cigarette filters. These are the items most often missed in cleanup but most numerous on the mountain.
7. Tip porters who do the heavy lifting. If your porter is visibly handling trash conscientiously — separating recyclables, bringing down others' missed waste — recognize and tip accordingly. This reinforces the behavior across the porter community.
8. Document and feedback. If you notice an operator practice that concerns you (porter burning waste at camp, dumping food scraps, leaving wrappers), record it and report to TNGR through the eRinjani system feedback channel after your trek. Specific feedback drives policy.
The trash situation on Rinjani in 2026 is significantly better than it was in 2018. Several genuine improvements have happened:
Operator standards have risen. The Eco Trek coalition of operators publicly commits to leave-no-trace and competes on this credential. Clients increasingly choose ethical operators, creating market pressure.
Annual cleanups have become institutionalized. What was once a one-off volunteer effort is now a structured TNGR-supported operation with budget, equipment, and porter teams.
Community awareness has grown. Sasak youth groups in Senaru and Sembalun increasingly view Rinjani as a community responsibility rather than just a tourism asset, and informal trash sweeps along the trail approaches have become regular.
Park enforcement has tightened. The 2023 introduction of ranger sweeps and operator audits, while limited, has put pressure on the bottom-tier operators that historically had the worst practices.
International visibility has helped. Several major international travel publications have covered the Rinjani trash issue, which has driven both client awareness and pressure on the Indonesian Tourism Ministry to support park-level interventions.
Rinjani is not a pristine wilderness. It is a heavily-trekked mountain in a developing economy where the infrastructure to manage tourism volume is still being built. But it is also not the disaster it sometimes looks like in viral social media posts; the worst-case visuals usually show concentrated waste at specific spots immediately before a cleanup, not the trail as a whole.
The reasonable position for a thoughtful trekker is: this is a real problem that requires real attention; choose your operator carefully; trek minimally; support the cleanup organizations; and accept that you are visiting a working ecosystem that needs your help to remain visitable for the next generation.
If you want to contribute beyond your own trek practices:
1. Donate to Trash Hero Lombok or RTMB. Both accept international donations through their websites and use funds directly for cleanup operations.
2. Choose to trek with an Eco Trek coalition operator. A small price premium that funds the operators with the best practices.
3. Volunteer for the cleanup. Annual cleanups in February-March welcome international volunteer participation. Logistics are handled by the organizing groups.
4. Spread awareness without sensationalism. When you write or post about your Rinjani trek, mention waste responsibility without making the mountain sound apocalyptic. Balanced honesty serves the cause better than either greenwashing or doom-scrolling.
The mountain is worth the effort. Trek it well, and leave it better than you found it.