The Larrimah Museum is in the old railway yards of Larrimah in a disused WW2 building, a former repeater station during the war.
Larrimah was established as the rail terminus of the North-South railway line from Darwin. The railhead was meant to be at Burdum, however, as the wet seasons rendered the road from Birdum impassable, a bridge crossing was seen as a likely target for enemy attack.
Larrimah rapidly developed as a military town. It was a transfer point for personnel and stores from the south to Darwin. There was two sidings, one for fuel and another for passengers and other freight.
A repeater station was constructed in 1942 which is now used as the Larrimah Museum. It was made of two Sidney Williams huts and provided direct voice communications in conjunction with other sites at Barrow Creek, Tennant Creek, Newcastle Waters, and Pine Creek.
Sidney Williams huts were easily transportable steel huts designed and manufactured by the Sidney Williams Company. In 1942, Sidney Williams Company were supplying 40 prefabricated buildings per week. Around 4,000 were made and erected in the north of Australia during World War II and many huts are still found throughout northern Australia.
The Wayside Inn (Larrimah Hotel), with the Big Stubby 
, was partly constructed from the dismantled Birdum Hotel. It was stated the war was directed from the porch of the Birdum Hotel as it was the headquarters of the American base established there in 1942.
Outside the museum, there are remnants showing the history of Larrimah with parts from aircrafts and railway scattered about.
The township of Larrimah is caught up in a murder mystery going back nearly 2 years ago, in December 2017. Paddy Moriarty disappeared, along with Kellie his kelpie, and is being treated as an unsolved homicide.
The entire population in Larrimah have been interviewed, less than a dozen permanent residents with persons of interest in Larrimah and from outside.
It is an interesting story of Paddy Moriarty 
that we were completely unaware of when we stopped in to see the town but we’ll watch the story now we know.
To get there:
Larrimah is along the Stuart Hwy north of Tennant Creek and south of Katherine in the Northern Territory. Turn at the brown sign for Museum at Mahony St, the Larrimah Museum is about 200m on the left.
Larrimah is also the site of a possible murder mystery, patty has been missing for many years. There was a dispute of meat pies and patty has not been seen since, the town has only 7 residents and all have been interviewed. They even investigated the local pubs resident crocodile. Some say he may have been fed to wild pigs..
It’s certainly an intriguing story that has attracted a couple of documentaries. Wayne and Bette didn’t know anything of it until your comment came through, they didn’t notice anything in the town mentioning it.