
 HISTORY
  UNKNOWN SOURCE--TWO PIER-LIKE STRUCTURES APPEARED ON CHART ì
11317 PRIOR TO 1980 EDITION. A POSITION BETWEEN THE TWO ì
STRUCTURES WAS SCALED FROM INSET OF CHART 11317 (1:20,000). ì
POSITION: LAT 28-38-55N, LONG 96-37-23W (ENT. 12/87 GM)
