Hegra - Mada'in Saleh (Al-Hijr, el Hijr)

Hegra is recorded both in Nabatean inscriptions and ancient writers¹.

Sources:

1. Werner Caskel, The Ancient Arabian Kingdom of Lihyan, An Address Delivered on the Anniversary of the Founding of the University of Cologne, West Germany, May 24, 1950. Translated from the German by Robert W. Lebling - https://pl.scribd.com/document/24367466
2. H. Grimme,  Neubearbeitung der wichtigeren Dedanischen und Lihjanischen Inschriften, Le Muséon, vol. L, Louvain 1937
3. Laila Nehme, Ancient Hegra, a Nabataean Site in a Semi-arid Environment. The Urban Space and Preliminary Results from the First Excavation Season, XVII International Congress of Classical Archaeolog y, Roma 22-26 Sept. 2008  Session : Formation d’une culture urbaine aux marges du dés ert syro-arabique: espaces urbains et périurbains  Bollettino di Archeologia on line  I  2010/ Volume speciale G / G5 / 3 - http://www.bollettinodiarcheologiaonline.beniculturali.it/documenti/generale/3_NEHME.pdf
4. Report on the Fourth Excavation Season (2011)of the Madâ’in Sâlih Archaeological Project, Edited by L. Nehmé, https://halshs.archives-ouvertes.fr/halshs-00671451/file/Hegra_2011_Report_introduction.pdf

References

1. ↑Laila Nehme, Ancient Hegra, a Nabataean Site in a Semi-arid Environment. The Urban Space and Preliminary Results from the First Excavation Season, pp.13-14