Ancient Inscription Discovered in Yemen

I'm not sure what to make of this. Is it a hoax? is it for real and, if so, what does it mean? Who - and when - drew this "castle" over ancient rock inscriptions? Ancient inscription discovered in Raima Homed, Sana’a Posted in: Local News Written By: Observer staffArticle Date: Jan 20, 2009 - 5:57:12 AM A castle-shaped inscription was recently discovered in Raima Homed, Sana’a by a team from the General Organization for Antiquities and Museums (GOAM). Minster of Culture Dr. Mohammed al-Maflehi told Saba news Agency that the antiquities team confirmed that this inscription is being regarded as the first of its kind to have been discovered. This statement is based on the clearness of the shape of the castle, the pre-Islamic handwriting ( Musnad), and the pictures of animals found behind it. The inscription was carved into a large rock in a mountain in front of the area where a team from the Department of Antiquities found the ancient monument in Hesn Ja’ar in Raima, Sana’a last week. Dr. al-Maflehi said the team will cover the area soon to define its importance and historical value.