FLC OF AN MLG HAD DIFFICULTY IN DETERMINING WHERE THE DISPLACED THRESHOLD WAS LOCATED DUE TO A LACK OF RWY MARKINGS FOR A CLOSED SECTION OF THE RWY.

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NUMEROUS RWY 3 NOTAMS DUE TO RWY 3 THRESHOLD DISPLACED 2000 FT. 'GSP NOTAM INDICATES RWY 3/21 SW 2000 FT CLOSED.' THERE ARE NO DISPLACED THRESHOLD MARKINGS ON THE CLOSED SURFACE -- IT IS NEARLY IMPOSSIBLE TO DETERMINE WHERE RWY 3 BEGINS. WAS FORCED TO QUESTION GND CTL ON TAXI BACK FOR TKOF WHERE THE RWY END WAS LOCATED. AN ARRIVING FLT MADE THE SAME COMMENT. THIS IS A VERY HAZARDOUS SIT. THE ARPT OPERATOR SHOULD PAINT STANDARD ICAO RWY MARKINGS ON THIS SURFACE WITHOUT DELAY. SUGGEST WE NOT USE RWY 3 FOR LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE ICAO RWY MARKINGS HAVE BEEN PUT IN PLACE FOR THE DISPLACED THRESHOLD AS A RESULT OF HIS SAFETY RPT TO HIS COMPANY AND EMPLOYEE ORGANIZATION. HE STATED THAT HE IS ON A LCL COMMITTEE IN HIS RESIDENTIAL COMMUNITY FOR THE ARPT REQUIREMENTS AND IMPROVEMENT FOR SAFETY. THEREFORE; HE IS EVEN MORE AWARE OF WHAT THE ARPT OPERATOR OBLIGATIONS ARE WHEN CLOSING PORTIONS OF A RWY AND IN ESTABLISHING A DISPLACED THRESHOLD.