This looks a lot like waves breaking over rocks somewhere on the Oregon coast. But it's not.

It's a hole in the Paraná Iguazú River.

We're spending a couple of days in a large subtropical rain forest: Iguazú. It's located where the borders of Argentina, Brazil and Paraguay meet.

The reason people come here is for the waterfall—the second-largest waterfall in the world after Victoria Falls. Makes Niagra Falls look like a plumbing leak.

The Paraná River originates in southern Brazil from moisture blowing in from the Atlantic Ocean. At the intersection of the three countries, it drops over 200' into a canyon and then continues southward, reaching the sea at Buenos Aires, a journey of 1,600 miles. This river deserves respect: It's second only to the Amazon.

The falls occur on the Iguazú just before it joins the Paraná.

Iguazú is probably the most spectacular waterfall in the world, not only because of the huge volume of its waters, but because it is broken into hundreds of separate cataracts, creating unmatched views.

After entering the park today, I traveled by train, boat, jungle truck and foot—especially by foot—to view the falls. I'm bushed: only enough energy for a short post. But I have a lot to say about this incredible place, so as my friend John Calypso says in his blog, Stay Tuned!