Volunteers from Maun Conservation Group sourced funding for the £15,438 Scrape project, rolled up their sleeves and liaised with contractors to carry out the work at the Quarry Lane Local Nature Reserve.
The scheme, known as the Upper Maun Project, will attract a greater variety of wildlife to the area, increase habitats and improve the conditions for water voles and other pond life, a spokesman said.
Instead of a traditional ribbon, the opening was marked by cutting ivy and red berries by 10-year-old King Edward’s Primary School pupil Robyn Reeve and conservation group member Ivan Felstead.
Coun Philip Shields, portfolio holder for the environment at Mansfield District Council, said: “The council is extremely grateful for the ongoing support of the Maun Conservation Group and their hard work on this project.
“It will make a real difference to the environment and the local community who will now be able to access the pond more easily.
“It is the perfect place for youngsters to go pond-dipping and learn more about the wildlife in the area.”
Pupils from King Edward’s and Sutton Road primary schools also attended.