The 'Cueva del Raton' is not a place you stumble upon. If you want to marvel at the enigmatic prehistoric pantings of animals and humans alike, including a mysterious red and black faced man, your best bet is starting from the village of San Ignacio. Leaving behind the Mexican Federal Highway, you'll find yourself surrounded by the stark and harsh beauty of the Vizcaíno desert where herds of goats may come and go but cacti stay your staunch companions, standing by your side even when the road turns to a narrow iron rich dirt road that snakes its way on the cliffside of the canyon of Santa Teresa - this is also when you'll be pleased with yourself for having chosen a 4x4. But you haven't make it so far only to see the cave paintings, you wish to see more of the canyon. Then mount your steed - a mule - and brace yourself for a bumpy ride.