After sending the previous post, i searched and found this interesting paragraph in lughatul Quran of Allama G.A.P:
(Marqum) means written, but recent research says that this is the same word which has been as termed (raaqeem) in the Torah.
This was the name of a city which became famous as Petra and which the Arabs called Batrah. It was situated north of the Sinai and Bay of Aqaba on a plateau. When in the second century A.D, the Romans merged Syria and Palestine, this city became famous as a Roman colony.
After the First World War, big caves were discovered there with ruins of buildings in and outside caves. It is believed that according to 18:9, the (ashaabul Kahafi war raqeem) had taken shelter in one of these very caves where later a statue was built to commemorate them.