Thinking is the best way to travel - to quote the Moody Blues. There was a great programme on television a few years ago - it must have been several years - and it unravelled the history of Mexico City, showing how the old and new were completely entangled. There was a film too - not megalithic but incorporating the waterways and piers. No, it wasn't Largo Winch. I have a pal who's an Indian - Inca - but he doesn't know and doesn't understand enough English for me to explain. Costa Rica, via the Emirates. But Mexico, as a country, is in a state of near collapse. We can trace some of the megalithic influences, perhaps, by Googling ' Oaxaca Highland Gold ' - it's one of the grandparents of B***berry.