Gilda's right though; there's a bit of issues with the map (though I might've installed it wrong, or its better in TF2), but it's a fairly decent map to use for outside scenes in Ponyville. Whoever the map-maker is, props to him/her!
Yeah, to use a term the moddlers over at Facepunch use, it looks overbaked, something like the renders you see in mode before they're ported to Source.