Well, you can go to Gullfoss …
…with the crowds.
Or you can go to Gilsáfoss. It’s not so large, but it has spirit, and an ice troll, if you go in April.

Gilsáfoss
Easy to get to, too. Drive east from the airport for 8 hours, turn left at Egilstadir, follow the lake through Hallomrstadir, and then, 30 minutes later, if you don’t stop to let the reindeer pass along the way, which is a fine reason to stop, for sure …
You’ll find it at the end of the lake, just upstream from the old bridge in the middle of this image. It’s the last stream before you cross the lake to the north side. Have a nice trip! The ice troll is waiting. Gulfoss will thank you.