التخييم في المنطقة المخصصة فقط.

It is very common Arabic sign / notice style, where full sentences are shortened.

So التخييم في المنطقة المخصصة فقط is not a full, fully explicit sentence in the way English learners might expect. It is more like a concise notice.

A fuller version could be something like:

• يُسمَحُ بالتخييم في المنطقة المخصصة فقط = Camping is permitted only in the designated area.
• يكون التخييم في المنطقة المخصصة فقط = Camping is only in the designated area.

In public signs, Arabic often drops words that are easy to infer from context.

التخييم is a verbal noun (also called a maṣdar) from the verb خيَّمَ = to camp.

Arabic often uses verbal nouns in notices, rules, and headings because they sound concise and formal. English does something similar with nouns like:

• No parking
• Smoking prohibited
• Camping in designated area only

So instead of saying خَيِّموا... (Camp...) or يُسمح أن تُخيِّموا..., Arabic uses the noun التخييم to refer to the activity itself.

It is the maṣdar of Form II:

• verb: خيَّمَ = to camp / set up camp
• maṣdar: تخييم = camping

The الـ at the beginning makes it definite: التخييم = the activity of camping / camping in a general regulated sense.

In signs, this definite form is very normal.

في means in.

Here it introduces the place where the activity is allowed or located:

• في المنطقة = in the area

That fits the idea of location. Arabic uses في very naturally for physical areas, spaces, zones, and regions.

Because Arabic often uses the definite form when referring to a specific known place, especially on signs.

• المنطقة = the area
• المخصصة = the designated / allocated

Also, in Arabic, an adjective must match the noun in definiteness. So if the noun has الـ, the adjective usually does too:

• المنطقة المخصصة = the designated area

If you said منطقة مخصصة, that would mean a designated area, which is more indefinite.

Because it describes المنطقة, and منطقة is a feminine noun.

Arabic adjectives must agree with the nouns they describe in:

• gender
• number
• definiteness
• case

So:

• noun: المنطقة = feminine singular definite
• adjective: المخصصة = feminine singular definite

That is why you do not see المخصص here.

المخصصة is the passive participle of the verb خصَّصَ = to designate, allocate, assign, specify.

So:

• خصَّصَ = he designated / allocated
• مخصَّص = designated / allocated (masculine)
• مخصصة = designated / allocated (feminine)

Since المنطقة is feminine, the phrase becomes:

• المنطقة المخصصة = the designated area

فقط means only, and placing it at the end is very natural in Arabic.

In this sentence, it limits the phrase before it:

• في المنطقة المخصصة فقط = only in the designated area

This placement is common and sounds normal in formal written Arabic, especially on signs and instructions.

If you move فقط, the emphasis can shift slightly, but the final position is one of the most common choices.

In practice, it limits the whole location phrase:

• في المنطقة المخصصة فقط = only in the designated area

So the intended idea is not only camping as opposed to some other activity. It means that camping is restricted to that place.

In other words, فقط is telling you where camping may happen, not what activity is being discussed.

Because in an iḍāfa construction, the first noun usually does not take الـ unless the whole expression has a special structure, and the second word is another noun.

Here, المخصصة is not a noun in that role; it is an adjective / participle describing المنطقة.

A very important clue is that both words are definite:

• المنطقة
• المخصصة

That is exactly what you expect in a noun + adjective phrase in Arabic.

In everyday writing and on signs, case endings are usually not written, so learners normally just read the unvoweled form.

If fully vowelled in isolation, the exact case can depend on how you analyze the omitted words in the fuller sentence. But for practical reading, what matters most is recognizing the structure:

• التخييم
• في المنطقة
• المخصصة
• فقط

So this is a good example of a phrase where understanding the grammar is more important than worrying about final short vowels.

A careful pronunciation would be roughly:

at-takhyīm fī al-manṭiqa al-mukhaṣṣaṣa faqaṭ

A few helpful pronunciation notes:

• التخييم: the تخ sequence can feel unfamiliar; kh is the throaty sound like German Bach.
• المنطقة: the ṭ is an emphatic t.
• المخصصة: the ṣ sounds are emphatic s sounds.
• فقط: often pronounced faqaṭ.

Also, in connected speech, short case endings are usually not pronounced in normal Modern Standard Arabic reading unless the text is fully vocalized and read very formally.