13 strokes
                                                    
                        Jouyou kanji
            Taught in 11th grade
    
                                            cavern
Kun'yomi
- い - わ - や - cavern 
- いはや 
- あな 
On'yomi
- クツ 
- コツ 
Character Breakdown
cavern
クツ コツ いわや (11th)
hole, aperture, slit
あな ケツ けな (6th, N1)
References
| Unicode hex code | 7A9F | 
| JIS X 0208 | 1-23-2 | 
| Nelson, A. Classic Nelson | 3331 | 
| Haig, J. New Nelson Japanese-English Character Dictionary | 4206 | 
| Halpern, J. New Japanese-English Character Dictionary | 2328 | 
| Halpern, J. Kodansha Kanji Dictionary | 2923 | 
| Halpern, J. Kanji Learners Dictionary (Kodansha), 2nd edition (2013) | 2032 | 
| Heisig, J. Remembering The Kanji | 2615 | 
| Heisig, J. Remembering The Kanji, Sixth Ed. | 1420 | 
| Morohashi Daikanwajiten | 25552 | 
| Spahn and Hadamitzky Kanji and Kana (2011 edition) | 1943 | 
| Maniette, Y. Les Kanjis dans la tete | 1335 | 
| Tuttle Dictionary Descriptor Code | 3m10.6 | 
| Four corner code | 3027.2 |