Alien Caught On Tape In An Abandoned Military Base

Yesterday, me and my friend went to an abandoned military base in Slovakia near the capital city Bratislava.
We heard some noises through searching, but we do not give them a lot of attention. Than, after we came back and review the footage, we found something crawling in the other room. It looks like a creature, but we are not sure, what it can be.
I am scared to go back, but maybe i will return there and find more evidence about this creature or alien or animal, i do not know.

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