A Fake Summit is the phenomenon that occurs when you go hill walking for the first time, i.e. you think you’ve reached the top of a hill but when you get to where you think is the top of the hill you realise there’s more climbing to do. Fake Summits sap morale and make people grumpy.
“That new girl who cane hill walking is really high maintenance, she had a proper hissy fit halfway up Blister Hill” Yes she did, she cracked after experiencing her 3rd Fake Summit”