Ni por asomo sabemos todo; aprendemos en el rocódromo.

Yes. Ni por asomo is a fixed idiomatic expression meaning not even remotely, not by a long shot, or not in the slightest.

Literally, asomo comes from the idea of a glimpse or appearance, so the phrase suggests not even by the faintest hint.

In this sentence:

Ni por asomo sabemos todo

the idea is:

We absolutely do not know everything / We don’t even come close to knowing everything.

It is stronger and more expressive than simply saying No sabemos todo.

That is normal with this idiom. In ni por asomo, the word ni does not need a previous no before it. The whole expression already works as a strong negative adverbial phrase.

So this is correct:

Ni por asomo sabemos todo.

You do not need:

No ni por asomo sabemos todo ❌

That would be wrong.

Both structures exist, but they mean slightly different things depending on context.

• Sabemos todo = We know everything
• Lo sabemos todo = We know it all / We know everything

In many cases, both are possible. Here, sabemos todo sounds natural and direct.

Also, todo here means everything, not all in front of a noun. Compare:

• Sabemos todo = We know everything
• Sabemos todas las respuestas = We know all the answers

Because todo here means everything, as a neuter idea, not all people or all things in a plural countable sense.

Compare:

• todo = everything
• todos = everyone / all of them / all (masculine plural)
• todas = all (feminine plural)

So:

• sabemos todo = we know everything
• conocemos a todos = we know everyone

Spanish often drops subject pronouns because the verb ending already shows who the subject is.

• sabemos = we know
• aprendemos = we learn

So nosotros is unnecessary unless you want emphasis or contrast.

For example:

• Sabemos todo = We know everything
• Nosotros sabemos todo = We know everything (with extra emphasis, maybe contrasting us with others)

In this sentence, leaving out nosotros is the most natural choice.

In Spanish, the simple present often covers ideas that English expresses with either the simple present or the present continuous.

So aprendemos en el rocódromo can mean:

• We learn at the climbing gym
• We’re learning at the climbing gym

The simple present is very common for general truths, habits, and even actions seen as current or ongoing in a broad sense.

If you said estamos aprendiendo en el rocódromo, that would sound more specifically focused on the ongoing process at this moment or in this period.

Rocódromo means climbing wall or, more commonly in practice, indoor climbing gym / climbing centre.

It comes from:

• roca = rock
• -dromo = place for an activity

In Spain, rocódromo is the usual word for the place where people practise climbing indoors.

So en el rocódromo means at the climbing gym or at the climbing wall facility.

Because en expresses location: in / at the climbing gym.

• aprendemos en el rocódromo = we learn at the climbing gym

If you used al rocódromo, that would suggest movement to the climbing gym:

• vamos al rocódromo = we go to the climbing gym

So:

• en = location
• a / al = direction or destination

The semicolon links two closely related ideas:

Ni por asomo sabemos todo; aprendemos en el rocódromo.

It shows a pause stronger than a comma but weaker than a full stop.

The two parts are connected:

1. We don’t know everything at all
2. We learn at the climbing gym

The second part helps explain or support the first. A full stop would also be possible:

Ni por asomo sabemos todo. Aprendemos en el rocódromo.

But the semicolon gives it a slightly more polished or reflective tone.

Yes, grammatically you can, but the meaning is weaker and less idiomatic in tone.

• No sabemos todo = We don’t know everything
• Ni por asomo sabemos todo = We don’t know everything at all / not even remotely

The original sentence sounds more emphatic and more natural if the speaker wants to stress humility or how much there still is to learn.

Yes. Starting with Ni por asomo gives the sentence emphasis.

Neutral order might be:

No sabemos todo ni por asomo.

But putting Ni por asomo first makes the strong negative idea hit immediately:

Ni por asomo sabemos todo.

Spanish often moves adverbial expressions to the front for emphasis or style.

Usually here it is best understood as know.

• saber often means to know facts, information, or how to do something
• entender usually means to understand

In sabemos todo, the natural reading is we know everything, not we understand everything.

Yes, rocódromo is especially standard and familiar in Spain. Learners focused on Peninsular Spanish should definitely know it.

In other Spanish-speaking regions, people may still understand it, but some might also use other expressions such as ones closer to climbing gym or climbing wall, depending on local usage.

So for Spanish from Spain, en el rocódromo sounds perfectly natural.

It sounds fairly natural and neutral, with a slightly thoughtful or expressive tone because of ni por asomo and the semicolon.

• ni por asomo adds vivid emphasis
• the semicolon makes it feel a bit more crafted or literary than everyday casual speech

In normal conversation, someone might also say:

• No sabemos ni de lejos todo.
• No lo sabemos todo; aprendemos en el rocódromo.

But the original sentence is still completely natural.