Ngawa Tibetan and Qiang Autonomous Prefecture, also known as Aba, is an autonomous prefecture of northwestern Sichuan, bordering Gansu to the north and northeast and Qinghai to the northwest. Its seat is in Barkam, and it has an area of 83,201 km2 (32,124 sq mi). The population was 895,200 by 2022.

An earthquake occurred in the province of Sichuan, China at 14:28:01 China Standard Time on May 12, 2008. Measuring at 8.0 Ms, the earthquake's epicenter was located 80 kilometres (50 mi) west-northwest of Chengdu, the provincial capital, with a focal depth of 19 km (12 mi). The earthquake ruptured the fault for over 240 km (150 mi), with surface displacements of several meters. The earthquake was also felt as far away as both Beijing and Shanghai—1,500 and 1,700 km away, respectively—where office buildings swayed with the tremor, as well as Bangkok, Thailand and Hanoi, Vietnam. Strong aftershocks, some exceeding 6 Ms, continued to hit the area up to several months after the main shock, causing further casualties and damage. The earthquake also caused the largest number of geohazards ever recorded, including about 200,000 landslides and more than 800 quake lakes distributed over an area of 110,000 km2 (42,000 sq mi).