<prompt> Translate the following text to SwahiliIf you intend to head out onto the fells, though, you should take the appropriate Ordnance Survey map along they provide the most detailed guides to the terrain.  <response>: Ikiwa una nia ya kwenda kwenye vilima, unapaswa kuchukua ramani sahihi ya Ordnance Survey pamoja na wao hutoa miongozo ya kina zaidi ya eneo hilo. 