UPDATE: ALL four men who had gone missing in Crediton State Forest have been found safe and well.
The men, aged 18 to 29, were on a four-wheel driving trip when they went missing on Saturday.
An off-duty RACQ CQ Rescue engineer out on a motorbike ride managed to find the men about 30km from the entrance to the forest.
They were stranded as their vehicle was "stuck and immovable" on a large fallen tree, a Queensland Police Service spokesman said.
A Rural Fire Service crew was on its way to pick up the men.
Their Nissan four-wheel drive will remain in the forest for now, as conditions make it too difficult to remove.
UPDATE: POLICE have received an "unconfirmed sighting" of four men who went missing in Crediton State Forest from a member of the public.
However, police cannot say for sure at this stage whether they're any closer to finding the men, aged between 18 to 29, who were travelling in a Nissan four-wheel drive.
A Queensland Police Service spokesman said National Park rangers and the State Emergency Service have joined the search for the men, who went missing on Saturday.
Rangers are using quadbikes to access areas around Captain's Crossing in the forest, which police are finding difficult to access.
The spokesman was unable to say whether access issues would have also prevented the men from getting into Captain's Crossing.
"As to their capabilities or where they might be, we're unsure," he said.
"The other issue is phone signals don't exist in the area, so there's no way of tracking them through their phones.
"And we don't believe they had an EPIRB (emergency position-indicating radio beacon) or anything.
"So if they're in distress there's no way of telling us. We just have to continue looking for them."
The veracity of the unconfirmed sighting at this stage is unknown, the spokesman said.
"We have received some information from a member of the public in relation to the men," he said.
"But as to exactly what that is or where it'll lead us to, I don't have that information to verify it."
The spokesman said police are hopeful "three reasonably aged men would've had enough common sense and past experience to travel with food and water, and we can find them successfully."
If you can help police in any way call Crime Stoppers on 1800 333 000.
Crediton State Forest is about 90km south-west of Mackay.
INITIAL: A POLICE search and rescue operation has been launched to find four men who have gone missing in Crediton State Forest.
The four men, thought to be aged in their late teens and early 20s, were on a four-wheel drive expedition around Captain's Crossing in the forest, but were due back before dark on Saturday.
A Queensland Police Service spokesman said family members had contacted police because the men haven't made contact.
The search was launched at first light this morning, but police officers from Finch Hatton and Eton have been struggling to reach Captain's Crossing due to access issues.
Roads around Crediton State Forest were washed out and collapsed during Cyclone Debbie.
The State Emergency Service have been on standby, prepared to help in the search for the missing men if called on.
Police are concerned the men haven't been in touch with family, but are still hopeful they'll find them safe and well.
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