It is located on the Wadden Sea north of Tzummarum and west of Dijkshoek and Westhoek.

The settlement of the hamlet is located on the Sedyk (Dutch: Zeedijk) in the Horne region.

In the monastic chronicles of the monastery of Lidlum, dated to the fourteenth century, the place appears as Cadahool.

The outflow to the sea was quite small there and in 1562 it was observed that: de stroom liep zoe zacht uyt dat 't men nauwelincx coste zien van datter waeter uyt liep (transl.

[5] This could fit an alternative etymology if one considers one other meaning of kald or the Dutch variant, koud: 'insignificant' or 'not much'.