Designers of a landmark park have come up with a £1.5m rescue plan to fund a host of projects ditched at the first attempt.
Supporters of Northala Fields, in Northolt close to the A40, were outraged when Ealing Council decided to scrap a proposed education centre and toilets needed to make the most of its potential.
It is the largest park of its kind built in a 100 years and was funded by a series of mounds used as landfill for projects like Wembley.
At its official opening on Monday architect Peter Fink told the Ealing Gazette about the proposal to resurrect stage two of the scheme by adding a fifth money-spinning mound to the park.
If agreed the plan could see the revival of the original blueprint drawn up in 2000 for a visitors' and education centre, a bridge over Kensington Road, toilets, cafe, community hall and offices for park rangers.
They were scrapped by the council in September 2006 after officials decided it exposed it to a £4.6m risk, although supporters insisted the scheme would have been entirely self-funding.
Mr Fink said: "It's very exciting. The council saw it as too risky before, but we've seen a way of absolutely taking the risk out.
"We've come up with a clear practical model of how it will be delivered with no cost to the taxpayer.
"What we said in 2000 we would deliver we have on time and on budget, and even the people who were sceptical are now excited about the result - and we can do the same again."
The solution proposed is to build an extra mound, which will take a similar amount of rubble as the existing four, which also includes construction waste from the White City Shopping Centre and raised about £1.5m each.
It would be shorter and wider and support a bridge over Kensington Road linking the area with Smith's Farm.
Ealing Mayor Ian Green celebrated the opening by raising the Green Flag awarded by the Civic Trust in recognition of 'excellence'.
Hundreds of pupils, parents and children signed a petition earlier this year for the learning centre to be built. They believe it is vital for schools to benefit from the vast potential of the park for learning.
The council declined to comment on the likelihood of the plans going ahead.
A spokeswoman said: "We're going to carry out a feasibility study to consider whether any future development at Northala Fields is possible.
"The process will be overseen by the Northala Fields Steering Board."