The public is scheduled to get its most detailed look yet at developer Larry Vander Maten's closely guarded vision for Explore Park at two public meetings Tuesday.

A short video representation of the types of development planned for Explore Park will be shown at each.

"The video sort of depicts what their vision of 'Rivertown' will look like going down the [Roanoke] river," using examples from other existing locations, said Roanoke County Supervisor Mike Altizer, who has seen it.

Specific details about Vander Maten's plans have been protected to this point, because Vander Maten has said confidentiality was necessary to preserve his investment.

Vander Maten, a Florida-based developer, is scheduled to show the DVD first to the Virginia Recreational Facilities Authority board, which oversees the park property, at 9 a.m. in the Vinton War Memorial Ballroom.

Then at 3 p.m., he's scheduled to use it again to brief the board of supervisors at the County Administration Center, 5204 Bernard Drive S.W. That meeting will be televised live on RVTV (Channel 3) on Cox Cable.

Neither of the presentations is a public hearing, so neither will be open to comment or questions from the public.

"This is a presentation only," said Fred Anderson, chairman of the facilities authority board -- a presentation meant to bring that body up to date on Vander Maten's plans.

Board members may ask questions, but questions from others will not be allowed. The supervisors' agenda, however, includes a time for general public comment near the end of its afternoon session for those who sign up at the beginning of the meeting.

Vander Maten is scheduled to present to the supervisors early in the afternoon.

Altizer said he expects Vander Maten or Dale Wilkinson, a Botetourt County developer who is also working on the project, to provide details in addition to the video.

They previously have described in general terms an "overnight family vacation destination resort" that will take advantage of the park's scenic natural terrain.

Vander Maten has promised "no roller coasters."

It "will have an outdoor recreation component with a high-tech twist to it ... water-related features," as well as "camping, hiking, horseback riding, canoeing, and other traditional outdoors events and activities," Vander Maten said last year.

"I think probably 95 percent or 97 percent of what is in the video is going to be at Explore Park," Altizer said.

He said that if Vander Maten's planning had been this far along three years ago, before the economic collapse, he would have given the estimated $90 million project "a 90 percent chance of coming to fruition."

"With today's ... economy, I think we're in the 60 percent range, just because you don't know what the financial markets will do."

Vander Maten has an option on a 99-year lease for the 1,100-acre site straddling the Roanoke County-Bedford County line. That option is scheduled to expire June 13, 2010, if he hasn't commenced work on his project by then.

The question for everyone after seeing Tuesday's presentation, Altizer said, will be, "is this a project I'm willing to wait for?"

"That's why I thought it was critical to get a presentation in front of the board, being televised for those who can't make the meetings."