Crack in the soundboard, by the sound hole
Instruments- discuss specific features, luthiers, instrument problems & questions
Marg, as a builder I am aware of such things. If I make a dulcimer with intricate soundholes, I'll glue some tiny wood pieces under overhangs, at right angles to them, as has been discussed below. It's just a good practice to get into and prevents breakages later. Glad you were able to repair your own dulcimer!