An intact burial chamber that is around 3,300 years old has been discovered by accident in Israel, the Antiquity Authority said on Sunday. The burial cave, dating back to the time of Egyptian Pharaoh Rameses II, contains dozens of ancient artefacts and was revealed in the Palmahim National Park in the Mediterranean Sea, the authority said. “The cave, exposed by a mechanical digger in the course of development works, was accessed for the first time since it was sealed, at the time of Rameses II,” the authority said. Scientists descended into “the astonishing space that appeared to have frozen i…