Fluðir is in a geothermal zone close by Geysir and Gullfoss, and is well known for its hothouses producing tomatoes and other produce, and for its mushroom farms. In addition, it is the location of the Secret Lagoon, a geothermal pool nestled among horticultural hothouses. It is a little more "down home" than the chi-chi Blue Lagoon. The "secret" is out, however, as the tour buses have discovered it...