India’s prime minister marked the opening of a tunnel in the northeast of disputed Kashmir that will grant all-year accessibility to a town that is isolated by heavy snow each winter. The $932 million project includes a second tunnel and a series of bridges and high mountain roads that will link Kashmir with Ladakh, a cold desert region nestled between India, Pakistan and China that has faced territorial disputes for decades. Amid high security, Narendra Modi visited Monday the resort town of Sonamarg where he inaugurated the 4-mile tunnel. Sonamarg denotes the end of the conifer-clad mountains of the Kashmir Valley before Ladakh begins across the rocky Zojila mountain pass.