Index: src/gaiageo/gg_wkb.c
==================================================================
--- src/gaiageo/gg_wkb.c
+++ src/gaiageo/gg_wkb.c
@@ -56,10 +56,14 @@
 #endif
 
 #include <spatialite/sqlite.h>
 
 #include <spatialite/gaiageo.h>
+
+#ifdef ENABLE_GEOPACKAGE
+#include <spatialite/geopackage.h>
+#endif
 
 static void
 ParseWkbPoint (gaiaGeomCollPtr geo)
 {
 /* decodes a POINT from WKB */
@@ -1076,14 +1080,26 @@
 /* decoding from SpatiaLite BLOB to GEOMETRY */
     int type;
     int little_endian;
     int endian_arch = gaiaEndianArch ();
     gaiaGeomCollPtr geo = NULL;
+#ifdef ENABLE_GEOPACKAGE
+    if (size < 24)
+        return NULL;		/* cannot be spatialite or geopackage blob */
+    if (*(blob + 0) != GAIA_MARK_START)
+    {
+        /* Try geopackage binary, since it is not a standard spatialite blob */
+	return gaiaFromGeoPackageGeometryBlob(blob, size);
+    }
+    if (size < 45)
+	return NULL;		/* cannot be an internal BLOB WKB geometry */
+#else
     if (size < 45)
 	return NULL;		/* cannot be an internal BLOB WKB geometry */
     if (*(blob + 0) != GAIA_MARK_START)
 	return NULL;		/* failed to recognize START signature */
+#endif	
     if (*(blob + (size - 1)) != GAIA_MARK_END)
 	return NULL;		/* failed to recognize END signature */
     if (*(blob + 38) != GAIA_MARK_MBR)
 	return NULL;		/* failed to recognize MBR signature */
     if (*(blob + 1) == GAIA_LITTLE_ENDIAN)

Index: src/headers/spatialite/geopackage.h
==================================================================
--- src/headers/spatialite/geopackage.h
+++ src/headers/spatialite/geopackage.h
@@ -61,10 +61,11 @@
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
+#include <spatialite/gaiageo.h>
 
 /* Internal geopackage SQL function implementation */
     GEOPACKAGE_DECLARE void fnct_gpkgCreateBaseTables (sqlite3_context *
 						       context, int argc,
 						       sqlite3_value ** argv);
@@ -123,10 +124,13 @@
     GEOPACKAGE_DECLARE void fnct_ToGPB (sqlite3_context * context, int argc,
 					sqlite3_value ** argv);
     GEOPACKAGE_DECLARE void fnct_GeomFromGPB (sqlite3_context * context,
 					      int argc,
 					      sqlite3_value ** argv);
+
+    GEOPACKAGE_DECLARE gaiaGeomCollPtr gaiaFromGeoPackageGeometryBlob (const unsigned char *gpb,
+								    unsigned int gpb_len);
 
 /* Markers for unused arguments / variable */
 #if __GNUC__
 #define UNUSED __attribute__ ((__unused__))
 #else

ADDED   test/sql_stmt_geopackage_tests/implicitgeopackagebinary1.testcase
Index: test/sql_stmt_geopackage_tests/implicitgeopackagebinary1.testcase
==================================================================
--- test/sql_stmt_geopackage_tests/implicitgeopackagebinary1.testcase
+++ test/sql_stmt_geopackage_tests/implicitgeopackagebinary1.testcase
@@ -0,0 +1,7 @@
+implicit geopackage binary 1
+:memory: #use in-memory database
+SELECT Hex(CastToLineString(AsGPB(GeomFromText("LINESTRING(136 -35, 134 -33, 135 -32)", 4326))))
+1 # rows (not including the header row)
+1 # columns
+Hex(CastToLineString(AsGPB(GeomFromText("LINESTRING(136 -35, 134 -33, 135 -32)", 4326))))
+0001E61000000000000000C0604000000000008041C0000000000000614000000000000040C07C0200000003000000000000000000614000000000008041C00000000000C0604000000000008040C00000000000E0604000000000000040C0FE