Another Rosetta Stone …
An inscription carved into a boulder high in the Almosi Gorge of Tajikistan’s Hissar Range has enabled philologists to decipher a writing system known as “the unknown script,” which was used during the centuries when the multiethnic Kushan Empire (ca. A.D. 50–250) held sway over Central Asia.
https://www.archaeology.org/slideshow/12149-kushan-unknown-script