What is the source of the orange river?
No context provided
What is the source of the orange river in Southern Africa?
Thaba Putsoa
No context provided
What is the source of the orange river in Maine?
Orange Lake
Orange River
https://en.wikipedia.org/wiki/Orange%20River
Thaba Putsoa (Blue Mountain) is a mountain in the Maseru District of Lesotho. It lies along the road to the Mohale Dam, approximately 70 kilometres to the southeast of the capital Maseru. 
Thaba Putsoa
It is the longest river in South Africa. 
Orange River
The Orange River is a short river in Whiting, Maine.
Orange River (Maine)
Thaba Putsoa is the source of the Orange River, which is the longest river in South Africa. Thaba Putsoa is a mountain in the Maseru District of Lesotho. It lies along the road to the Mohale Dam, approximately 70 kilometers to the southeast of the capital Maseru. Orange River is also the name of a short river in Whiting, Maine. Orange Lake is the source of this Whiting, Maine river. 