A 36-year-old man has been killed and two others seriously injured in a landslide accident along a popular walking track in the Blue Mountains.

The National Park contractors were called in to perform a routine check at Wentworth Falls in the Blue Mountains when a rock wall collapsed over them.

Nine ambulances, including a Special Operations Team, were called in to retrieve the trio but took up to an hour to reach them due to their location.

It’s believed that the 36-year-old man had passed upon paramedics arrival, while his 26-year-old and 27-year-old co-workers were helicoptered to Westmead Hospital for emergency treatment.

One of the men is believed to have suffered from pelvic and leg fractures, while the other is suffering from numerous bodily fractures.

According to Channel 10 News, investigations are currently underway to improve safety procedures for contracted National Park staff in the future.

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