The 2.4-kilometre Girls Walk, which begins and ends behind women's residence Ella Boyd Hall on the west bank of Jigadee Creek, is the beneficiary of about $15,000 in donations and hours of volunteer service coordinated by brothers Drs Darren and Jason Morton.

Jason, a lecturer in biology in the Faculty of Science and Mathematics, applied successfully for a $10,000 grant from the Hunter-Central Rivers Catchment Management Authority to protect and regenerate 70 hectares of native riparian and wetland vegetation.

He and Darren, a senior lecturer in the Faculty of Education, used the money to build three kilometres of fencing.

Some 45 of the hectares were already protected by fencing built with a grant former dean of the Faculty of Arts and geography lecturer Dr Howard Fisher received from the authority.

A $1000 donation from Matt Wilson, the owner of Morisset Motor Body Repairs and neighbour of Darren, helped the Mortons lay an ash surface along parts of the walk.

"The biggest job—the eradication of lantana—is still to be completed. The mowing of the grass is almost as big a job, but users of the walk can help," Jason said.

"The more people use the walk, the less the grass grows. It helps us out a lot."

The brothers will now begin improving the estate's other historic track - Boys Walk.

When completed, the tracks will form part of a new seven-kilometre loop of the estate.