Late Hittite inscriptions in Luwian language engraved on natural rock.
See:
- Mustafa Kalaç, John David Hawkins, The hieroglyphic luwian rock-inscriptions of Malpınar, Anatolian Studies Vol. 39 (1989), pp. 107-112
- http://www.hittitemonuments.com/malpinari/
- http://digitalcollections.library.ku.edu.tr/cdm/singleitem/collection/GHC/id/8139/rec/1