The deadly reality behind one of Bali's most popular tourist sites

Holidaymakers have been warned not to climb Bali's tallest mountain without a guide after recent deaths on difficult hiking trails.

While the Indonesian island's highest peak Mount Agung - more than 3km above sea level - is modest compared to many other mountain ranges, a local guide is required to accompany those venturing to the top.

But some tourists instead skirt the requirement, underestimating the difficulty of the climb, which has led to two deaths in the past two months.

A Dutch woman, 29, died in hospital on Thursday after falling about 15m from a trail while trekking up the mountain and into a deep ravine.

The body of another tourist, a 60-year-old Indonesian man, was found by a group of hikers near the mountain's peak in March. Neither hired a local guide for their climbs.

Holidaymakers in Bali have been urged to hire a local guide before attempting to hike up the Indonesian Island's mountains after two tourists died on Mount Agung (pictured)

Holidaymakers in Bali have been urged to hire a local guide before attempting to hike up the Indonesian Island's mountains after two tourists died on Mount Agung (pictured)

The Dutch woman, identified by her initials FB, set off on the about six hour return hike to Mount Agung's peak with her Danish Partner about 3am local time.

Head of Public Relations for the Karangasem Police, Iptu I Gede Sukadana, said they intended to hike 'independently without using the services of a local guide', Bali Sun reports. 

Her partner ran back down the mountain to find help from a member of the Social Forestry Business Group and dozens of locals.

They were able to transport FB back down the mountain on a stretcher and she was rushed to the Selat Health Center.

Mr Sukadana said she suffered extensive injuries including a broken jaw, left arm and front teeth.

Despite being conscious upon arrival, her condition rapidly deteriorated and she died shortly after.

According to local authorities, about six tourists die on Balinese mountainsides every year without the help of local guides.

The rescue effort for the Indonesian man who perished on Mount Agung in March was more intensive for Search and Assistance Officers who took about 28 hours to bring him back to the base.

A 29-year-old dutch woman and a 60-year-old Indonesian tourist have died since in the past two months (pictured, Balinese rescue officers on Mount Agung)

A 29-year-old dutch woman and a 60-year-old Indonesian tourist have died since in the past two months (pictured, Balinese rescue officers on Mount Agung)

Mount Batur hike on the Indonesian island of Bali, with Mount Agung in the background

Mount Batur hike on the Indonesian island of Bali, with Mount Agung in the background

The man had attempted to climb to the top without a guide during rough weather conditions and while a restriction on hiking was enacted for the Betara Turun Kabeh religious ceremony.

Indonesian Minister for Tourism and Creative Economies, Sandiaga Uno, said officials are 'very concerned' about the safety of tourists hiking without guides.

'We give a firm appeal ...  for tourists to be guided and ensure they follow the rules,' Mr Une said in April, also pleading tourists to 'prioritise safety'.

Holidaymakers have also been urged to not spent too long at the peak of Mount Agung or Batur as they are active volcanoes.

Local guides can be hired through their hotels, travel agents or online.