Karka d-Ledan, also known as Eranshahr-Shapur, and Eran asan kar(t) Kavad, is an archaeological site that was one of the four Sasanian major cities in the former settlement of Khuzestan, in the modern-day province of Khuzestan, Iran.
It was (re)founded by King of Kings (shahanshah) Shapur II () in 338 CE, who had a winter palace established there. Karka d-Ledan is identified with the modern site of Ivan-e Kerkha.