Rozcestník se dá vidět z výchozího bodu.

Rozcestník is a masculine noun. It usually means a signpost, especially one at a crossroads or junction showing directions.

In this sentence, rozcestník is in the nominative singular, because it is the grammatical subject of the sentence.

Yes, historically it comes from the verb dát (to give), but in modern Czech dá se + infinitive is a very common pattern meaning:

• can be ...
• is possible to ...
• is possible/easy to ...

So se dá vidět means can be seen or is visible.

In this sentence:

• dá se vidět = can be seen
• Rozcestník se dá vidět... = The signpost can be seen...

This is one of the most useful Czech patterns to learn.

Because vidět is an infinitive, and it depends on dá se.

The structure is:

• dá se + infinitive

Examples:

• To se dá udělat. = That can be done.
• Odtud se dá slyšet moře. = The sea can be heard from here.
• Rozcestník se dá vidět... = The signpost can be seen...

So dá is the conjugated verb, and vidět stays in the infinitive.

Here se is part of the impersonal/passive-like construction dá se + infinitive.

It does not mean himself / herself / itself in the usual reflexive sense here. Instead, it helps form a meaning like:

• it is possible to
• can be

So in this sentence, se is not really translated word-for-word into English. It is part of the grammatical pattern.

Because the preposition z (from / out of) requires the genitive case.

So:

• výchozí bod = starting point / origin point
• z výchozího bodu = from the starting point

Case changes:

• nominative: výchozí bod
• genitive: výchozího bodu

That is why both words change:

• výchozí → výchozího
• bod → bodu

Výchozí bod means starting point, point of departure, or sometimes reference point, depending on context.

In this sentence, the most natural meaning is starting point: the place from which you are looking.

So z výchozího bodu means from the starting point.

Yes, absolutely. That would also be very natural.

There is a slight nuance:

• Rozcestník je vidět... = The signpost is visible...
• Rozcestník se dá vidět... = The signpost can be seen...

The version with je vidět focuses more on the result/state: it is visible. The version with dá se vidět focuses a bit more on possibility: it can be seen.

In many contexts, the difference is small.

It can often correspond to either one in English, depending on context.

For example:

• Odtud se dá vidět hrad.
  • You can see the castle from here.
  • literally/formally: The castle can be seen from here.

In your sentence, English most naturally says:

• The signpost can be seen from the starting point.

But Czech does not always force the same subject-centered wording that English does.

Czech word order is flexible, so the sentence could be rearranged.

Rozcestník se dá vidět z výchozího bodu puts rozcestník first, which makes it the main topic or focus of what is being discussed.

Other possible orders:

• Z výchozího bodu se dá vidět rozcestník.
• Z výchozího bodu je vidět rozcestník.

These may sound more natural in some contexts, especially if the sentence is answering a question like What can be seen from the starting point?

So the original order is grammatically fine, but Czech word order often reflects emphasis more than strict syntax.

Vidět is imperfective.

That is normal here, because the sentence describes a general possibility or state, not a completed single act of seeing.

Czech usually uses the imperfective in expressions like:

• dá se vidět
• je vidět

A perfective verb would not fit naturally here.

Yes. This is a very productive and common pattern.

Examples:

• To se dá udělat. = That can be done.
• To se dá pochopit. = That can be understood.
• Tady se dá parkovat. = It is possible to park here.
• Ten nápis se dá přečíst. = That sign can be read.

So learning dá se + infinitive is very useful in everyday Czech.

Not especially in this sentence. Z very often means from and takes the genitive.

Just remember that Czech has two common words corresponding to English from:

• z = from inside, from out of, from a place/source
• od = from a person or from near something

Here z výchozího bodu is correct because it means from the starting point as the source/location of the view.

A native speaker might very well say:

• Z výchozího bodu je vidět rozcestník.
• Rozcestník je vidět z výchozího bodu.

These often sound slightly more direct and natural than se dá vidět, though your original sentence is still correct.

So if you want a very common everyday phrasing, je vidět is worth learning alongside dá se vidět.