A glass-bottomed extension in China that was proclaimed as a record-breaker when it opened only 13 days back has shut.

Authorities said the administration was arranging critical support work in the region and the scaffold shut on Friday, with a re-opening time to be reported.

However, the US CNN system said a representative let them know the extension, traversing a gulch, was "overpowered by the volume of guests".

He said there had been no mishaps and the scaffold was not split or broken.

The 430m-long extension, which cost $3.4m (£2.6m) to fabricate, interfaces two mountain precipices in Zhangjiajie, Hunan area.

It hangs 300m over a gully said to have roused the scenes of the film Avatar.

When it opened, it was said to be the most noteworthy and longest glass-bottomed extension on the planet.