Forget digging for Yamashita's treasure, dig to the other side of the world instead!
Here's another weird googlemaps mashup (by Luis Felipe of Brazil) that tells you where you would wind up if you do manage to dig a hole deep enough.
Apparently, digging anywhere in Rizal Park will lead you somewhere north of the border of Brazil and Bolivia.
(P.S. -Big thanks to my dear friend Mayang who is running a 10K for Jack.)