Merkers-Kieselbach lies on either side of the River Werra near the Thuringian Forest and Rhön hills.

[1] but didn't last long, as in 2013 it too merged with the neighbouring Dorndorf forming Krayenberggemeinde.

The "Wellenbalken or silver fess wavy" with "Kieseln- golden stones" symbolises the word Kieselbach, the castle symbolises the Krayenburg[3] Crossed miners hammers and a green hill are included.

The Merkers area of the municipality is famous for its salt mine, where large amounts of Nazi gold, and many stolen works of art were discovered by the United States Army in 1945.

General Dwight D. Eisenhower himself went into the mine in April 1945 in order to examine the find.