The Dettifoss Waterfall
Rainbows are always a bonus when photographing waterfalls.
Dettifoss unleashes a greater volume of water than any other
waterfall in Europe.  But it's horrible spray greatly limited my
opportunities for pictures.
Here is massive waterfall power, captured further down from
the prior still.  You can see the spray, a mortal enemy to
anyone hoping to use cameras.  But if the wind cooperates,
I get this picture minus spray.  
Still lucky, I took this wider shot of Dettifoss.  The water is
often brown, which means that it originated from glaciers.
White water, in contrast, comes from snow, or so I was told.
Still wider and free from spray, the brown water of Dettifoss
is even more obvious.  Anyone who went in the opposite
direction, seeking photographs of the falls from a lower
vantage point, got drenched by the spray.
If you have a high speed internet connection,
watch the Intrepid Berkeley Explorer's complete,
free video of this trip, "Land of Lava, Waterfalls
and Glaciers", by clicking on: