Japan will finance the construction of a $US5 million ($A6.52 million) laboratory in Bolivia for the study of cosmic rays, Japanese Nobel laureate Takaaki Kajita says.
The winner of the 2015 Nobel Prize Winner in Physics travelled to La Paz to accept an honorary degree from Universidad Mayor de San Andres.
The new lab is to be built at an altitude of more than 4750 metres on Mount Chacaltaya, a peak near La Paz where the Bolivian university already has a scientific facility.
Construction is expected to be completed in three years.
A score of Japanese and Bolivia researchers will work at the lab under the supervision of Masato Takita, an associate professor at Tokyo University's Institute for Cosmic Ray Research.