Where is this unfinished tomb known as the “lonely castle”?

Here is the question :

WHERE IS THIS UNFINISHED TOMB KNOWN AS THE “LONELY CASTLE”?

Here is the option for the question :

• Sri Lanka
• Jordan
• Malta
• Saudi Arabia

The Answer:

And, the answer for the the question is :

Explanation:

[STC0019181]. The ancient, incomplete tomb of Qasr al-Farid (‘Lonely Castle’) rises from the desert of northern Saudi Arabia. During the Nabatean administration in the first century CE, it was carved from a single rock. If it reminds you of the carved rocks of Petra, Jordan, that’s because Petra was formerly the capital of the Nabatean monarchy.