This paper proposes that Dama Ali volcano (11. 280°N, 41. 630°E; summit elevation 1, 068 m asl) in the Afar Depression of Ethiopia occupies a position of precise astronomical consequence, and that the rock-hewn sanctuary complex of Lalibela (12. 031°N, 39. 047°E) was sited in deliberate geometric relationship to this origin. The argument develops two independent correspondences. First, the Sirius-standstill identity — φ + |δSirius (t) | ≈ δₛtandstill (t), linking observer latitude, Sirius's absolute declination, and the major lunar standstill maximum — is satisfied at Lalibela with a residual of 0. 163° at the modern epoch and 0. 170° at ca. 1200 CE, the period of the churches' recorded construction. A uniqueness test against eight Afar Depression and Ethiopian highland features confirms that among all sites with documented cultural significance, Lalibela satisfies the identity most closely. Second, the great-circle bearing from Lalibela to Dama Ali (106. 271°) matches the Sirius heliacal rising azimuth at Lalibela (106. 824° at 1200 CE) with a residual of 0. 553°. A null distribution test shows that of twelve major Ethiopian sites and Afar features, only Dama Ali — and its surrounding Lake Abhe basin — falls within 1° of the Sirius rising azimuth from Lalibela. The two correspondences are independent: the identity was derived without reference to the bearing, and the bearing was subsequently computed as a predictive test. The combined probability of both correspondences arising by chance is estimated at approximately one in four thousand. Dama Ali is proposed as the cosmological reference point of a broader Ethiopian highland astronomical system, and Lalibela as the observatory sited at the latitude where the Sirius-standstill identity is most exactly expressed.
Diogo Azevedo Oliveira Sennfelt (Thu,) studied this question.