Voiced alveolar nasal. Vibrate some air through your vocal cords, stop it at the roof of your mouth with your tongue. Nope. No passage here. Never. Send that air out through your nose.
When N stands next to C or G both letters are pronounced together and sound a bit like Ing, the other nasal letter besides M, which is N’s Rune Poem partner. M and N are still close in modern English, next door neighbors, and together they are the only nasal letters left to us since Ing went east.
Carve a line straight down to rock bottom. Now constrict it with another line, right through the heart. Point that line down a bit too, but also point it up.