Idiom: in the hole (used idiomatically: yes)
As the ash dries hard it is dug out for sale for the construction industry , yet another habitat is created With the layers of rock compacted over millions of years , this soft ash forms perfect artificial gifts for burrowing animals like rabbits For this young fox , what better place to practise digging than a soft cliff of ash , watched nervously by potential lunch Another predator not necessarily fond of the ash , but very keen on the animals that it attracts , is the polecat ferret Once used by poachers many of these agile hunters are now wild and range freely over the rough ground near power stations in search of prey Round at the top of the ash are the nest borrows of one of Britain 's rarest bird , the sand martin the monitor of this power station has ensured special in there so the birds can find ideal nest sites . He 's even arranged for holes to be drilled into the ash to give the sand martins a head start These days secured nest sites for these beautiful birds are increasingly rare . This artificial ash cliff is perhaps one of their last strongholds have also found refuge around our fire stations , protected from tramping feet and sheltered from chemical sprays these rare plants thrive in the damp salty margins alongside the ash lagoons all this within the boundaries with just a few of the country 's coal fired power stations but the need for sea walls of other coastal stations merely intake pipes to the coaling system , another world teams this is not a plant , fan worms have flowerlike mouth parts used to filter food from the sea water other worms use just two sticky tentacles to catch food shrimps forage over closely packed sea the delicate bodies of these printed vertebrates work as tiny water pumps , pulling water in one hole and pumping it through the other here two barnacles feed in the gentle flow of water over the cooling pipes from the station Marine life quickly packs the underwater structures and is about to become too thick and sometimes affect the performance of the machinery barnacles belong to the same family as crabs and lobsters , but being in their adult life standing on their head which is fixed to the concrete they use their feet to filter the water and kick food into their mouths but if they ca n't move , how do they get there so quickly in the first place ? The answer is that after mating they produce a tiny mobile larvae totally different to the adult this might drift for miles on ocean current before settling into the fixed adult form Down Norwick power station in North Wales , generates the electricity by pump storage , in off peak hours thousands of gallons of water are pumped from a lower lake to an upper lake , when the demand for electricity is high bowels are opened and water falls back through turbine to the lower lake again , this generates the power To ensure that the lower lake would never flood the was diverted through mile long tunnel in the mountain side , no one knew for certain how the salmon , the trout and even rarer that used to migrate up the old river would cope with the tunnels , pitch darkness and slow flowing water . A lot of people , some , some people well you should of and and er many other people say that this would n't go through , particularly them the going through the tunnel .