Plans for the new building were being drawn up and the board hoped to keep the project as local as possible.
She said people can go to the cave's Facebook page for progress updates.
"We are in the process of starting to pack up the cave contents. We have packed the Christmas displays away."
She said board members, Cave Dwellers committee members and volunteers will spend one or two days a week packing up the cave once it closes and anyone wanting to help would be welcome.
The board was working hard to keep the vibe of the cave going.
"We are stressing that the cave is going into recess, not closing down."
Edwards said the board intends to have a float in this year's Christmas parade and to set up a Santa's grotto.
"We are hoping to find a central location on High St for this as we want to maintain our presence. It's important for us to remain in the public eye."
While final numbers visiting the cave over the holiday period were not yet available, Edwards said they were on a par with last year.
"We had a great help from our volunteers over the holiday period when we were open every day and we had very good numbers through the cave. I think a lot of people realised it wouldn't be open next Christmas."
Edwards said there had been a lot of comment in the community about the cave having to make changes.
"It's very easy for people to say it's Health and Safety gone mad, but it's very easy for things to come unstuck."
In the meantime it will remain open every Saturday from 10am to 12.30pm until March 28.
"We want to make the last day something special so we are busy making plans.
*People wishing to make donations to the Fantasy Cave building fund can do so through the Dannevirke Cave Dwellers Inc Building Account 01-0611-0086165-01.