A new car park, walker registration and a toilet block could soon be built at The Walls of Jerusalem national park.

A development application for the $312,000 project has been lodged with the Meander Valley Council.

The application said the national park is a majestic place in the heart of an alpine wilderness. 

"It is the second-most popular backcountry walking destination in the Tasmanian Wilderness World Heritage Area, with 6000 to 8000 visitors annually," the application said. 

"The basic car park is inadequate during moderately busy periods and there is evidence of high levels of human waste in the vicinity impacting on both environmental and visitor experience values."

A full-capture pump-out toilet would be installed, along with enlarging and organising the current car park.

The proposed toilet is a Gough Plastics Hybrid waterless toilet system, which is an above-ground installation. A 5500 litre holding tank would also be fitted. 

A dedicated entry and egress points would also be created along with dedicated bus and car parking.

Minor excavation would be undertaken for levelling and re-sheeting. 

Interpretive signage, registration booth and a boot-wash station will also be installed. 

The project would be completed in stages, with the toilet facilities and car park planning to be the first phase.

"The improved convenience and aesthetic quality is also befitting to the area as an entry point to the Tasmanian Wilderness World Heritage Area and will reflect positively on the Parks and Wildlife Service." the application said. 

If no action is taken, the "ever increasing" toilet waste will detract from the visitor experience, it said. 

Anyone wishing to make a representation about the proposed development is asked to contact the Meander Valley Council. 

The application is open for comment until March 26. 

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