Index: src/uk/me/parabola/mkgmap/reader/osm/MultiPolygonRelation.java
===================================================================
--- src/uk/me/parabola/mkgmap/reader/osm/MultiPolygonRelation.java	(revision 1563)
+++ src/uk/me/parabola/mkgmap/reader/osm/MultiPolygonRelation.java	(working copy)
@@ -399,6 +399,16 @@
 			}
 
 			if (remove) {
+				// check if the polygon contains the complete bounding box
+				Rectangle bboxRect = new Rectangle(bbox.getMinLat(), bbox
+						.getMinLong(), bbox.getMaxLat() - bbox.getMinLat(),
+						bbox.getMaxLong() - bbox.getMinLong());
+				if (w.getBounds().contains(bboxRect)) {
+					remove = false;
+				}
+			}
+			
+			if (remove) {
 				if (log.isDebugEnabled()) {
 					log.debug("Remove way", w.getId(),
 						"because it is completely outside the bounding box.");