HowRaisedBogsForm
Onetypeofbogiscalledaraisedbog.ItiscommoninIreland.Longago,glaciersscrapedouthollowsintheland.Thosehollowsfilledwithwater.Theybecamesmall lakes.
![](/nationalgeographic/pioneer_may_2020/how_bogs_form/1131490/stage_1.800_0_1.png)
lake
Ontheedgesofeachlake,plantsgrew.Astheydied,theybegantofillupthe lake.
![](/nationalgeographic/pioneer_may_2020/how_bogs_form/1131494/bog_2.800_0_1.png)
dead plants
Asthedeadplantspiledup,theycreatedaspongymat.Overtime,thismatgrew.Ittrappedwaterinthelake.Mossesgrewontop.Thisisaraised bog.
![](/nationalgeographic/pioneer_may_2020/how_bogs_form/1131497/bog_5.800_0_1.png)
moss
![](/nationalgeographic/pioneer_may_2020/how_bogs_form/1131510/NGX0520_EE_13.720_0_1.jpg)
bog plants
peat
Thisraisedbogtookthousandsofyearsto form.
![](/nationalgeographic/pioneer_may_2020/how_bogs_form/1131509/NGX0520_EE_12.720_0_1.jpg)
Irishpeatisharvestedtobeburnedinpower plants.