Chief Mrs. Sinatu Aduke Sanni, widely known as 'Iya Olumo,' was the custodian of the god inside the famed Olumo Rock in Abeokuta, the Ogun State capital.
Sanni, also known as the tourism center's mother goddess, died on Wednesday at the age of 137, according to reports.
Her son, Solomon Adio, confirmed her death, saying his mother died after a brief illness at her Itoko home in Abeokuta.
Olumo Rock, according to legend, was used as a natural stronghold during a long-ago inter-tribal fight.
According to legend, the Egbas became invisible to their attackers after hiding within the rock, and their adversaries sought everywhere for them in order to kill them.
Since then, the Olumo Rock, which saved the Egba people from their enemies, has become a popular tourist destination in Abeokuta, the capital of Ogun State.
Sanni has been another tourist draw for many years, since she provided unusual knowledge on the famed Olumo Rock.
She remained the centre of attention as she grew older, displaying no signs of exhaustion in her work at the tourist information centre.
The elderly woman, however, died just a few months before her 138th birthday.
According to her son, Adio, the doyen spent more than 40 years serving the gods of the rock in one of the enclaves beneath the rock.
"By August 5, Mama will be 138 years old." After a brief illness, she passed away.
"She was the deity's mother." We're going to miss her terribly. Mama dedicated her life to the rock, to the god. Adio explained, "She was devoted to the gods."