A Victorian good Samaritan, who became stranded while helping strangers in Kakadu National Park, has had his caravan ransacked.

Key points: Peter Schipper said he was stranded at Cahill's Crossing trying to do a good deed

Peter Schipper said he was stranded at Cahill's Crossing trying to do a good deed Locals abandoned him when his vehicle got stuck, he said

Locals abandoned him when his vehicle got stuck, he said Members of Jabiru and Gunbalunya communities helped him

Members of Jabiru and Gunbalunya communities helped him Schipper's caravan was ransacked by parties unknown

Peter Schipper, 62, told the ABC that one of his most treasured possessions, a porcelain doll he named Jenny after his late wife, was among the goods stolen.

Mr Schipper became stranded at Cahill's Crossing, a notorious causeway across the East Alligator River that joins Kakadu with Arnhem Land, on Friday.

He said he had picked up three local people who assured him that his vehicle could safely make it across.

"I didn't want to go across. I took their advice ... I was talked into it really," Mr Schipper said.

With the tide coming in, his car and caravan became stuck in the crocodile-infested river, and the people he was helping out took off on foot to the Oenpelli side of the river, he said.

He said they got into a car and left, while he was stranded and alone on the Jabiru side of the river.

Mr Schipper said none of those he helped ever came back to help him.

Mr Shipper said he had been overwhelmed by the generosity of others, particularly from the mining town of Jabiru and nearby Gunbalanya, who helped him recover his vehicles on Saturday.

However, the caravan was ransacked on Saturday night by parties unknown, Mr Shipper said.

As well as the 55-year-old doll, he had a generator and solar panelling taken from the caravan, he said.

"That [the doll] is the only thing I am really upset about. Everything else can be replaced," Mr Schipps said.

The trip he was taking around Australia was something he had long wanted to do with his wife, but was being completed in her memory, after she died in January 2011 after a long battle with cancer and other illnesses.

Free rides over Kakadu for his trouble

He said that locals in Jabiru had donated many belongings to him and had given him cut-price accommodation.

A local helicopter company even gave him two free rides over Kakadu to make up for the difficulties he had faced.

"All I had with me was a pair of sandals, my shorts, a t-shirt and underwear. I also had my phone and credit cards," he said.

Mr Schipper said he thought his insurance would cover the replacement cost of his car and caravan, although he was less certain if the goods that were stolen would be covered.

He has not given up his dream of completing his trip around Australia either.

As soon as he received his insurance money, Mr Schipper said, he would return to Jabiru and recommence his trip.

He is also hoping that the doll that was accompanying him on the trip would be returned when someone realised its sentimental value.