A skier travels over old German mountains and other bits of land (6)
I believe the answer is:
kaiser
'old german mountains and other bits of land' is the definition.
I can't tell whether this definition defines the answer.
'a skier travels over' is the wordplay.
'travels' indicates an anagram.
'over' means one lot of letters goes inside another.
'skier' anagrammed gives 'kiser'.
'a' placed inside 'kiser' is 'KAISER'.
Can you help me to learn more?
(Other definitions for kaiser that I've seen before include "Old German emperor like Bill" , "Ex-ruler of Germany" , "Old German emperor, pre-Hitler" , "Ruler over empire" , "Former German emperor" .)