The phrase 'deep inside the mountain' is correct and usable in written English.
It can be used to describe a location deep within the mountain. For example: "The cave entrance was hidden deep inside the mountain".
The report said that technicians had moved sophisticated technical equipment into the uranium enrichment facility situated deep inside the mountain.
The awe-inspiring journey continues on guided quarry tours, where visitors are taken deep inside the mountain to experience the caves' majestic grandeur.
We were not particularly deep inside the mountain — I had heard that some mines at La Rinconada were three miles deep, with innumerable branches in every direction.
To get a better sense of what it will feel like to be deep inside the mountain, we visited the Nordic bank.
During their shift, they had noted a wailing rumble in the distance — the sound of many tons of rock falling in forgotten caverns deep inside the mountain.
During their shift, they had noted a wailing rumble in the distance the sound of many tons of rock falling in forgotten caverns deep inside the mountain.
As chief of communications for one of the Afghan bands fighting Al Qaeda, Mr. Qadiri was trying to get the details from fellow commanders deep inside the mountains when gunfire echoed through the valley.
According to the latest information, the uranium enrichment activities at the new Fordow site, hidden deep inside the mountains near Qom, are closely monitored by the experts working at this division, which reveals the sinister objectives which guided the regime's attempts to build the Fordow site.
Four boys were rescued Monday from the flooded cave in Thailand, meaning divers have extricated eight of the 13 people who've been trapped deep inside the watery mountain prison for over two weeks.
I liked Stanley, deep inside the Sawtooth mountains, and especially the Sawtooth Hotel (rooms from $70) with its genuine frontier feel.
