Translation of ludicrous in Spanish

Although it was only one thirty we had already seen a lot. The ones who tell you that you could stay there for a week and not see everything are actually right. The entire region is vast.
We were not the only tourists, there were a many boats sailing on the same route. At one point the driver stopped the boat and immediately children of the village people approached us.
It was a two hour flight above the vast area of Patagonia. On the left side of the flight path there were mostly arid areas, some covered in snow. On the right side of the airplane were the mountains.