By Alfred Hermida BBC News Online correspondent in Kuta

Saturday started out as a normal night in Kuta for Boya Knapkova, a pretty 28-year-old from the Czech Republic.

She was out with her friends having a beer in the popular Sari Club, as were hundreds of other foreigners.

But then her evening out on the town turned into a nightmare.

"There was a bang and the lights went off," she told BBC News Online. "Five seconds later there was another bigger blast."

'Terrible heat'

Boya was in the back of the club, away from the main force of the explosion.

As the thatched roof started to catch fire and collapse, she realised she had to get out somehow.

I can't eat, I can't sleep, I can't relax, I feel lucky but I still feel scared

Boya Knapkova

"I saw there was a bamboo wall and we climbed over it," she recalled. "Everything was on fire and the heat was terrible."

She made it and ran across a courtyard to a broken metal door. She pushed her way through and out into the open.

"The street was full of glass and people," she said, as people around her speculated that a local gang had tried to blow up the Sari Club.

"I escaped to the beach and only then realised how lucky we were to be OK."

'So close'

Boya suffered some minor cuts and bruises to her legs.

'Where is safe now?' Boya asks

She only found out the scale of what she had lived through the following day when friends came to her hotel and they saw the full scale of the devastation on TV.

"It is absolutely incredible," she said of the numbers killed.

"People are still walking around, wondering what happened.

"It was so close, I can't believe we made it," she said.

'Sick' attack

Visiting the scene of the blast a couple of days later, she still has trouble coming to terms with what she lived through.

"I can't eat, I can't sleep, I can't relax," she explained. "I feel lucky but I still feel scared."

As with many other foreign tourists, Boya is fleeing Bali, heading back to her home in Australia and to have a medical check-up.

"Where is safe now?" she asked. "I thought the last place something would happen is Bali.

"I can't comprehend why people do things like this," she said, "it's sick."