An ephemeral pool of water in the granite riverbed of the Agua Fria River Canyon in the Agua Fria National Monument of Arizona.

agua fria ephemeral pool granite riverbed canyon arizona desert landscape natural beauty water rock formations sunlight flora wilderness serenity geologic features outdoor adventure nature wildlife habitat seasonal rugged terrain walls picturesque setting environmental conservation hiking destination remote area geological exploration tranquil scenery high oasis aquatic ecosystem colors clear skies