They move in circles and look dizzy before dying, often face-first.
It's unknown. In Botswana, hundreds of elephants have perished with these signs in recent months.
281 elephants have perished since March 2020, according to government officials.
One of Africa's final strongholds for savanna elephants is Botswana, with 130,000 estimated.
A thousand-square-mile area northeast of the Okavango Delta housed Botswana's dying wildlife.
In this isolated terrain, it may take days to find and evaluate an elephant's body.
By then, the light has degraded the body, possibly deleting important evidence.