Tens of thousands of brightly clothed Ethiopians gathered in the heart of the city center for the traditional gratitude celebration during recent days.
Irreecha is observed by the Oromo community, the biggest ethnic group, and is held at the completion of the land's primary monsoon period.
Annually, festival-goers come together around revered rivers and lakes to express gratitude to their creators for the greenery that the rainy season have brought.
"I have participated in Irreecha for the past nine years," mentioned 25-year-old Moata Abdulmajid.
"To me, the celebration symbolizes my heritage, it reflects the pride and significance of my ethnic group."
Males, ladies, the elderly and the younger generation all join in, ornamented in eye-catching clothes and jewellery.
They sing, dance, tell tales and arrange freshly cut green plants and flowers in liquid - symbolizing life, rebirth and aspiration.
Irreecha does not only attract people from all regions of Ethiopia, visitors travel from around the world.
"I came last year - it was wonderful, so magnificent, I brought along my children with me this year," said one visitor, hailing from abroad.
"It's wonderful. All people welcomes you, everyone offers affection and says welcome."
The opening day of the festival occurred on the weekend in the capital. On the next day, participants journeyed to a nearby town, a settlement close to the main city.
While Irreecha has its foundations in traditional beliefs, it is now celebrated by the larger part of the Oromo people, regardless of their faith.
In the past decade, the quantity of individuals participating in the event has increased dramatically. This is partially because of the growth of online networks, where many young people capture their attire, traditional dances and singing during the gathering.
In the past, Irreecha was functioned as a platform for public dissent - the Oromo community have long complained about social exclusion.
Nevertheless, this year's celebration took place calmly, with an priority on celebration, unity and cultural pride.
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