You can't say от там.Originally Posted by Seventh-Monkey
оттуда - from there
Там is an adverb, от is a preposition. Prepositions can only go with nouns and adjectives.
Здесь - here
Там - there
Сюда - to here
Туда - to there
Отсюда - from here
Оттуда - from there
Куда? - Where to?
Я иду туда - I am going there
You can't use там here because tam is an expression of LOCATION, whereas the sentence is expressing MOTION.
Куда ты идёшь? - Where are you going?
Где ты идёшь? - wroooooooong. Где is location, not motion.