"swallowed it up" is a correct and commonly used phrase in written English.
It is used to describe the action of consuming or absorbing something completely. Example: The sinkhole opened up suddenly and swallowed the entire car up.
"I thought we were goners for sure, was truly scary how fast it came into our camp site and swallowed it up," she said.
I doubt if they still return to that water, as the suburban growth of the town has extended to Clickhimin and swallowed it up making it less attractive to a migratory swan seeking a milder winter.
They also thought that in 2003 the galaxy could have emitted a brief flare as it tore apart a star and swallowed it up, but other observations showed the quasar was still bright for years after 2003.
In January of 1990, the Nakhchivan Autonomous Socialist Soviet Republic (formerly the independent Aras Turkish Republic before the Soviets swallowed it up in 1920) took a stand against what it saw as Russia's progressive disenfranchisement of the Azeris of Nakhchivan and the separate Azerbaijan Soviet Socialist Republic in favor of Armenians.
Now Tibet is a country that hasn't existed formally since 1950, when China invaded and swallowed it up.
At that time, political paranoiacs tended to vote Democratic for candidates like George Wallace; over time, they migrated to the state's Republican Party — and swallowed it up.
I loved Rome more than ever, and I wanted to swallow it up with me.
They're not afraid of the sun here, they're swallowing it up, getting that deep, dark tan.
In the early universe, when gas was abundant, many black holes grew to become extremely massive by swallowing it up, emitting immense amounts of energy.
The iceberg only gets seven hours and 40 minutes of daylight now, and soon the darkness will swallow it up completely.
Chad dreams of the profits that will flow in when a planned Interstate is cut through the dig and a lake is allowed to swallow it up; he's already been in talks with the Holiday Inn folks.
