Abstract Mount Rinjani is an active volcano located in the Rinjani-Lombok UNESCO Global Geopark area. The Caldera of Samalas, formed by the Old Rinjani/ Samalas eruption in 1257, is the most important geoheritage of Rinjani-Lombok Geopark. To reach the Caldera of Samalas geosite, people have to climb Mount Rinjani through one of six trekking trails. The Rinjani-Lombok Geopark is located on a small island that is vulnerable to natural disasters and geohazards such as earthquakes. As a result, disaster risk must be considered when developing tourism in the area. In 2018, the Lombok earthquake had a significant impact on trekking activities. More than 1000 trekkers were trapped inside Mount Rinjani. The earthquake triggered a coseismic landslide, damaged the trekking trail and caused the trekking activities to be closed for a year. Rinjani, on the other hand, has received the most foreign tourist visits of any volcano in Indonesia. Mount Rinjani National Park data over the past five years reveals an increase in tourists, indicating the need for a security system particularly disaster mitigation in tourism operations. This study was conducted to determine changes in disaster mitigation operations following the 2018 earthquake. The method used was an in-depth interview with Mount Rinjani National Park Office and Trekking tourism business actors, followed by image analysis that took into account geological condition, topography, rainfall and earthquake intensity. The study found that the impact of the earthquake, particularly coseismic landslides, was closely tied to geological conditions, topography and hydorological factors. In terms of disaster mitigation, Mount Rinjani National Park has made improvements in trekking registration and visitor data, but structural and non-structural trekking safety have to be improved by increasing the capacity of mountain guide and porter teams, as well as implementing a safety induction program before starting the trek.
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