A mine shaft collapse in Alloa is "completely unrelated" to ground movement in a nearby village that has seen 97 families evacuated, according to a mining body.
The exposed mine shaft was noticed on Monday by businessman Derek Hanna, who said it was about a metre from a portable cabin at his car dealership on Clackmannan Road.
The road was closed while the Mining Remediation Authority (MRA) fenced off the site and filled the shaft with stone to stabilise it.
Clackmannanshire Council said the road reopened on Monday evening.
Derek Hanna said: "I left the garage on Saturday night at half past five and everything was fine.
"I was in on Monday morning and I noticed there was a massive hole, so I got a ladder and had a look in, it was about five or six metres round."
He said that workers from Clackmannanshire Council's roads department arrived within 20 minutes.
Hanna said the MRA arrived shortly afterwards, "because they were obviously on site in Coalsnaughton."
"They took over, and within an hour the road was closed," he said.
"I had to move my cars, but they were very quick in what they were doing."
Hanna said he had "got a fright more than anything else."
He told BBC Scotland News: "I didn't expect to see that size of hole, because it was roughly a metre from my Portakabin, so I phoned right away.
"They got it under control, they were very professional."
'Further investigations'
An MRA spokesperson confirmed the authority was made aware of the incident on Monday.
They said: "Working closely with Police Scotland and other partners, we immediately fenced off the site to keep people safe and have filled the collapse with stone to stabilise the affected area.
"We will carry out further investigations to determine the cause of the collapse, design a permanent treatment solution and carry out repair works as soon as we can.
"We'd like to reassure the community that this is an isolated incident and it is completely unrelated to the incident we are dealing with at Coalsnaughton."
Some 256 residents in four Coalsnaughton streets were moved out of their homes after ground movement was discovered in May.
An eight-week investigation by the MRA confirmed that the issue, which saw cracks appear in roads, paths, and homes, is related to historical mining work.