Paskontrollen ligger i afgangshallen.

Because Danish normally writes compound nouns as a single word.

So:

• pas = passport
• kontrol = control/check

Together they become paskontrol = passport control.

Then the definite ending is added:

• paskontrol = passport control
• paskontrollen = the passport control

This is very common in Danish. English often uses two words where Danish uses one:

• togstation = train station
• lufthavn = airport
• pasnummer = passport number

So paskontrollen is completely normal Danish spelling.

The ending -en is the usual definite article ending for many common-gender nouns in Danish. It often corresponds to English the.

So:

• en paskontrol = a passport control / passport check
• paskontrollen = the passport control

and

• en afgangshal = a departure hall
• afgangshallen = the departure hall

Unlike English, Danish usually puts the at the end of the noun instead of using a separate word before it.

Because in Danish, definiteness is usually shown by attaching it to the noun.

English:

• the passport control
• the departure hall

Danish:

• paskontrollen
• afgangshallen

This is one of the biggest differences from English. Danish does have separate definite words such as den, det, and de, but they are mainly used when an adjective comes before the noun:

• hallen = the hall
• den store hal = the big hall

In your sentence, there is no adjective, so the ending on the noun is enough.

In Danish, ligger is very often used to mean is located.

So Paskontrollen ligger i afgangshallen is the natural way to say that passport control is located in the departure hall.

English usually says:

• Passport control is in the departure hall

But Danish often prefers:

• ... ligger i ... = ... is located in ...

This verb is especially common for places, buildings, rooms, offices, services, and geographical locations.

You may also hear:

• Toilettet ligger til højre. = The toilet is on the right.
• Hotellet ligger tæt på stationen. = The hotel is close to the station.

Using er is not always wrong, but ligger is often more idiomatic when talking about location.

Ligger is the present tense of at ligge.

• at ligge = to lie / to be situated
• ligger = lies / is located

So the sentence is in the present tense:

• Paskontrollen ligger i afgangshallen.
• Passport control is in the departure hall / is located in the departure hall.

Danish present tense verbs are often very simple because they do not change for person:

• jeg ligger
• du ligger
• den ligger
• vi ligger

The form stays ligger.

I usually means in.

So i afgangshallen means in the departure hall.

That makes sense because a hall is treated as an enclosed space. Danish therefore uses i just as English uses in.

Compare:

• i hallen = in the hall
• i lufthavnen = in the airport
• i bygningen = in the building

If the place were thought of differently, Danish might use another preposition, but here i is the normal and expected choice.

That -s- is a linking element that often appears in Danish compounds.

The word is built like this:

• afgang = departure
• hal = hall

But when combined, Danish uses:

• afgangshal

Then in the definite form:

• afgangshallen

This linking -s- does not have a separate meaning here. It is just part of how many compounds are formed.

You will see the same thing in many other words:

• arbejdsplads = workplace
• fødselsdag = birthday
• sprogskole = language school

Unfortunately, there is not always a simple rule that lets you predict it perfectly, so it is often best to learn compounds as whole words.

Yes, but the verb still has to stay in second position in a normal main clause.

The basic order is:

• Paskontrollen ligger i afgangshallen.

You can also front the location:

• I afgangshallen ligger paskontrollen.

That version is grammatically correct, but it sounds more marked or literary in many contexts. The first version is the most neutral.

This is a good example of the Danish V2 rule:

• in a main clause, the finite verb usually comes second

So if you move i afgangshallen to the front, ligger still has to come right after it.

A helpful learner-friendly guide is:

• paskontrollen ≈ PASS-kon-TROL-en
• afgangshallen ≈ AF-gangs-hal-en

A few useful points:

• Danish compounds usually keep a strong stress near the beginning.
• The r in ligger is not pronounced like a strong English r.
• Final syllables in Danish are often weaker and less clear than in English.

A rough full-sentence guide could be:

PASS-kon-trol-en LIG-er i AF-gangs-hal-en

That is only an approximation, but it is a good starting point.

Normally, no.

The standard spelling is:

• paskontrollen

Not:

• pas kontrollen

And usually not:

• pas-kontrollen

In Danish, compounds are generally written as one word. A hyphen is only used in special cases, such as clarity, unusual combinations, abbreviations, or foreign elements.

So for ordinary vocabulary like this, one word is the correct form.

Yes. It sounds neutral and natural.

It is exactly the kind of sentence you might see or hear in an airport context, for example in directions or travel information.

You could also hear closely related versions like:

• Paskontrollen er i afgangshallen.
• Du finder paskontrollen i afgangshallen.
• Paskontrollen ligger henne i afgangshallen.

But Paskontrollen ligger i afgangshallen is a very normal and idiomatic sentence.