 If you liked
Shoujo Shuumatsu Ryokou
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 ...then you might like
Sounan desu ka?
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Animes that consist on a group of girls surviving day-to-day in the hostilities of their environments which are wasted lands, abandoned factories, desert islands.
In Girls' Last Tour is much more dramatic since the civilization has collapsed there and Chito and Yuu are almost the last two persons still alive, while in Are You Lost? has more comedy, included some tutorials for camping, and also a small dose of ecchi.
Both series have the straight-woman, Chito and Homare in Shoujo Shuumatsu Ryokou and Sounan Desu ka? respectively; and the clumsy girl(s), Yuuri, and Asuka, Mutsu and Shion in SSR and SDK respectively.