A planned 10.6km cable car route would connect Son Doong Cave with other caves in the area as part of a planned “tourism, service and resort complex”. Photograph: Carsten Peter/NG/Getty Images
Plans for a cable car in Vietnam’s Unesco-listed Phong Nha-Ke Bang national park would open up the world’s largest cave to mass tourism. But Vietnamese are protesting the project, and experts warn the environmental impact could be devastating.
Researchers fear that building the towers needed to support the cable car could damage the fragile network of caves in the area. Construction on top of Son Doong would put pressure on the already weak ceiling, potentially triggering collapse, according to geomorphologist Vu Le Phuong, who has been studying the cave since the first expedition in 2009. Video Inside Here
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