Chengdu, China ? All the pandas at the world’s most famous panda preserve were reported safe late Tuesday, more than a day after China’s worst earthquake in three decades closed off the remote, mountainous area.

The Wolong National Nature Reserve and panda breeding center is the only place in the world where the rare animals can be seen in such large numbers. But Chinese officials and zoo officials overseas had worried about the fate of the center’s 86 pandas since Monday’s devastating earthquake rattled nearby areas in central Sichuan province.

Late Tuesday, officials at Wolong used a satellite phone to contact the State Forestry Administration and report that the pandas were safe, the official Xinhua News Agency said. It said all panda cubs had been taken to safety.

Thirty-one British tourists panda-watching in Wolong and initially reported missing were safe and in the provincial capital of Chengdu Tuesday night, the Chinese Foreign Ministry said in a statement.

No mention was made of a group of 12 Americans in the area on a tour sponsored by the World Wildlife Fund. Kerry Zobor, U.S.-based spokeswoman for the WWF, said they have not been able to contact the WWF members.

More than 60 pandas at another breeding center in Chengdu are safe, and the center reopened to tourists Tuesday morning, Xinhua said. Another eight pandas at a preserve in Ya’an, about an hour’s drive west of Chengdu, were reported safe as well.

But the Wolong center is deep in the hills north of Chengdu along a winding, two-lane road that reports say was wiped out in places by the quake. Earlier phone and e-mail contact had failed.

Pandas are among the world’s rarest animals, and so slow to breed that any large-scale loss could have been critical to the population. Both the Wolong and Chengdu centers are part of efforts to breed giant pandas in hopes of increasing the species’ chances of survival. About 1,600 pandas live in the wild in China’s mountainous west and another 180 live in captivity.

The Wolong center offers visitors the rare chance to play with young pandas, while wearing sterile gloves, booties and gowns for the pandas’ safety.

It is also difficult to reach, even in the best of times. Rescue workers only reached nearby areas by foot Tuesday.