Two people were injured and four cars damaged when a large tree fell on them in Auckland's Cornwall Park this afternoon.

A 30m cottonwood tree fell over in the car park just below the restaurant and information centre at the park at about 2.15pm.

The two people suffered moderate injuries and no one was trapped in the cars, a police media spokesperson said.

Cornwall Park Trust director Michael Ayrton said a woman was taken to hospital in an ambulance and was accompanied by her son-in-law who also had some minor cuts.

He said they were both in shock.

Some of the vehicles had been quite badly damaged with the roofs being crushed and the windscreens smashed, Ayrton said.

The cars were being towed away and the surrounding area was being cleaned up by staff.

The road leading to the car park was closed and the tree was still lying across the car park.

The tree was 130 years old and was in a relatively sheltered position in the park.

Consulting arborists were on site to try and establish what caused the tree to fall. The trees at the park are inspected each year.

"We are just relieved no one was seriously hurt," Ayrton said.

A similar incident happened in February this year when another tree fell at Cornwall Park crushing a number of cars.

In that incident a woman was treated for shock.

- NZ Herald