I think this is the image you are referencing:
[attachment=1:1ny7pk04]fourth-lake-austin.jpg[/attachment:1ny7pk04]
photo by stuckincustoms
Yes this is a high dynamic range photograph. Usually an HDR photograph is a series of photographs that are shot at different exposures and then later combined using computer software into one image.
The reason HDR photos look so awesome is that human eyes are amazing have amazing dynamic range. Take a look at this:
http://en.wikipedia.org/wiki/Dynamic_range
Cameras on the other hand have relatively bad dynamic range (although it gets better all the time). The HDR sort of hacks these two ideas in a good way. When you take a series of images at different exposures you can capture more dynamic range than the camera can capture in one image. When you put them all together on the computer later on, it often feels more like it felt in real life.
To understand this think about slicing a potato. Normally when you take a photo you are capturing a slice of the possible dynamic range in an image. Ie one slice of a potato. When you shoot an HDR you are trying to capture the whole potato by stacking up all the potato slices. Does that make sense?!
Anyway, nice job here and I love the HDR technique and travel too!
Here is one I took in Toronto a while back:
[attachment=0:1ny7pk04]hdr-toronto.jpg[/attachment:1ny7pk04]
See you on the next assignment. 😀