Archaeologists in Peru say they have discovered a temple at the ancient site of El Paraiso, near the capital, Lima.
Entry to the rectangular structure, estimated to be up to 5,000 years old, was via a narrow passageway, they say.
At its centre, the archaeologists from Peru’s Ministry of Culture found a hearth which they believe was used to burn ceremonial offerings.
With 10 ruins, El Paraiso is one of the biggest archaeological sites in central Peru.
The archaeologists found the structure, measuring 6.82m by 8.04m (22ft by 26ft), in the right wing of the main pyramid.
They had been carrying out conservation work on the site on behalf of Peru’s Ministry of Culture when they came across the remains, which had been obscured by sand and rocks.
They said the temple walls were made of stone and covered in fine yellow clay which also contained some traces of red paint.
The archaeologists said the find suggests that the communities in the Late Pre-ceramic Age (3500 BC to 1800 BC) were more closely connected than had been previously thought.
Peru’s Deputy Minister for Culture Rafael Varon said the the temple was the first structure of its kind to be found on Peru’s central coast.