To what little city was Lot hoping to flee after leaving Sodom?

According to the following passage in Genesis it was called Zoar.

18And Lot said unto them, Oh, not so, my LORD:19Behold now, thy servant hath found grace in thy sight, and thou hast magnified thy mercy, which thou hast shewed unto me in saving my life; and I cannot escape to the mountain, lest some evil take me, and I die: 20Behold now, this city is near to flee unto, and it is a little one: Oh, let me escape thither, (is it not a little one?) and my soul shall live. 21And he said unto him, See, I have accepted thee concerning this thing also, that I will not overthrow this city, for the which thou hast spoken.22Haste thee, escape thither; for I cannot do anything till thou be come thither. Therefore the name of the city was called Zoar.