A California man who planned to launch himself 1,800 feet high on Saturday in a homemade scrap-metal rocket – in an effort to “prove” that Earth is flat – said he is postponing the experiment after he couldn’t get permission from a federal agency to do so on public land.

Instead, Mike Hughes said the launch will take place sometime next week on private property, albeit still in Amboy, California, a community in the Mojave Desert along historic Route 66.

“It’s still happening. We’re just moving it three miles down the road,” Hughes told The Washington Post on Friday. “This is what happens any time you have to deal with any kind of government agency.”

Hughes claimed the Bureau of Land Management said he couldn’t launch his rocket as planned on Saturday in Amboy. He also claimed the federal agency had given him verbal permission more than a year ago, pending approval from the Federal Aviation Administration.

Representatives from the BLM and the FAA did not immediately respond to requests for comment Friday.

Assuming the 500-mph, mile-long flight through the Mojave Desert does not kill him, Hughes told the Associated Press, his journey into the “atmosflat” will mark the first phase of his ambitious flat-Earth space program.