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INTEGRAL regularly scans the Galactic plane to search for new objects and inparticular for absorbed sources with the bulk of their emission above 10-20keV. The first new INTEGRAL source was discovered on 2003 January 29, 0.5degree from the Galactic plane and was further observed in the X-rays withXMM-Newton. This source, IGR J16318-4848, is intrinsically strongly absorbed bycold matter and displays exceptionally strong fluorescence emission lines. Thelikely infrared/optical counterpart indicates that IGR J16318-4848 is probablya High Mass X-Ray Binary neutron star or black hole enshrouded in a Comptonthick environment. Strongly absorbed sources, not detected in previous surveys,could contribute significantly to the Galactic hard X-ray background between 10and 200 keV.Comment: 6 pages, 4 figures (fig 1 quality lowered), accepted for publication  in A&A letters (INTEGRAL special issue

INTEGRALdiscovery of a bright highly obscured galactic X-ray binary source IGR J16318-4848