DStretch Version. Petroglyph G12 Khatm Al Melaha, Kalba, Sharjah. Unknown animal, difficult to document. Likely Neolithic 5th-4th Millennium BCE [Fossati 2019 Messages from the Past: Rock Art of the Al-Hajar Mountains (Oman)].Khatm Al Melaha is a spectacular archaeological site on the coast of the Oman Sea near Kalba in Sharjah, UAE. It is one of the largest rock art sites in the UAE. There are also stone houses, a shell midden, stone tombs and other features that date this site has having occupations from at least the early Holocene to the 19th century.