Two new quad bikes used for Scouts and Guides camp activities have been stolen from Walesby Forest.
The quad bikes at Walesby Forest International Scout Centre were brought a few weeks ago by the centre for around £3,000 each.
They were specially brought for an international camp which will see over 3,000 Scouts and Girl Guides at the centre for a week.
A spokesman from the centre on Brake Road, Walesby, said: "They were unfortunately our only two quad bikes.
"The quads were for our international camp later this week and the theft will mean that the children will miss out on a popular activity.
"The police are looking at the CCTV cameras in the area so hopeful it won't be long before these callous criminals are caught."
The bikes which are Yamaha YFZ50 were stolen at 7pm on July 21.
The thieves were reportedly driving a Ford Transit Tipper and there were three males reported to be in their 30's.
The thieves were also confronted by staff at the centre and drove through a closed wooden fence towards the A614 when they left the centre.
A spokesman from the centre added: "There were 200 children in the centre when it happened, if soemone had been walking next to the gate I don't know what would had happened."
A Nottinghamshire Police spokeswoman said: "Our enquires are ongoing, if you are able to assist with our investigations please ring 101."