Because Afrikaans often forms compound nouns by writing the parts together as one word.
So:
English often writes similar ideas as two words, but Afrikaans usually prefers one combined word.
Because the sentence is simply stating what the wall has in a general sense:
Afrikaans, like English, often leaves out the article in this kind of plural phrase.
If you added die, it would sound more like you were referring to specific, already known holds:
That is possible in the right context, but it is less natural as a simple general description.
Yes. That would mean:
That version is more general.
The original sentence with die points to a specific climbing wall:
So the choice between die and 'n depends on whether you mean the or a.
Yes, a few common ones:
So one very common mistake is reading die the English way. In Afrikaans, die = dee.