Organisers of the appeal to rebuild the café at the top of Snowdon have asked for more time to raise funds, after failing to meet their deadline.
The old café is set to be demolished
Snowdonia National Park Authority has collected over £7m for a new visitor centre, but is still £1.7m short.
The mountain top cafe was famously labelled a "slum" by Prince Charles.
The Welsh Assembly Government is working with the Welsh European Funding Office (Wefo) to try to make the project happen.
An assembly government spokesman said a series of constructive meetings had been held over Snowdon Summit.
The project, which will cost £9m, will now go before an advisory group at the end of July.
David Archer, head of conservation at the park authority, said £7m had been raised from major donors and public funding, while £334,000 had come from the public appeal which was launched in April.
"The money hasn't come in quite as fast as we hoped and expected but we have got contacts with a lot of possible donors," he said.
"We believe this is achieveable but we need more time," he said.
"We are very grateful indeed for the response we have had from the general public.
Plans for the new café have been drawn up
"A lot of people have donated small sums of money and showed their confidence in the project."
He said they were looking for one major sponsor and were confident that one would come forward. "We are prepared to consider anybody who wishes to contirbute to the scheme.
"Clearly we would have to look at the conditions attached to that offer, but certainly we are prepared to consider any reputable sponsor."
Dan James, operations director of the Snowdonia Society, said they hoped the request for more time would be granted.
"We hope that those who have not yet donated will do so in order for this crucial project to succeed," he said.
"It is essential that the present decaying building can be replaced with one much more fitting to its spectacular location."