The opening of the Berrima River Walk was well attended by Highlanders from across the shire, despite the wet weather on Sunday afternoon.

The event officially opened the bush walk which highlights the location of some of the German internees' constructions during their enforced stay in Berrima during World War I. Berrima was the only Australian World War I internment camp which did not confine internees within the camp perimeter.

The afternoon was hosted by River Walk Committee chairman Colin Gelling and included speeches from deputy mayor Graham McLaughlin, Gundungurra elder Aunty Val and special guest from the Consulate General of the Federal Republic of Germany, deputy consul general Anne-Kirsten Wohlleben.

"This walk means a lot to me personally because it reminds me of a part of German history in Australia that was kind of forgotten and that not a lot of people, neither in Australia, nor in Germany, are aware of anymore," Ms Wohlleben said.

"It also means a lot to me because it was not imposed on the people from 'above', but local people like Lyn Hall, John Simons, Colin Gelling and many more initiated it and put a lot of heart and blood into researching and documenting those times from 100 years ago.

"It touched me to learn that the locals feel that their enforced stay brought lasting benefit to the small village of Berrima."

The idea to commemorate this historical time was fitting with one of Germany's many traditions.

"The Germans love their walks and traditionally, after church and Sunday lunch with the family, you would go for a long walk," Ms Wohlleben said.

Ms Wohlleben and Mr Gelling thanked the volunteers, community members and council officers who made the process possible.

"I wish to take this opportunity to thank the many Berrima citizens who have supported this project both in a financial sense and with their time," Mr Gelling said.

"We recognise, honour and give tribute to three of those who have so much to this grand and courageous idea.

"Dennis Brown who laboured mightily on the river, John Symonds who wrote and produced the powerful consummate story of the German internment camp in Berrima and of course the late Alan Terrell who's hard work, vision and contribution results in us being here today."

Ms Wohlleben joined River Walk Committee members and the community on a stroll along the river after she officially opened the commemorative signed walk.