Day 22 egg linear crack not pipping

[Gambkati]

Day 22 and woke up to egg with linear crack along the side. No foul smells. Is it going to explode? I tried candling it and could see because it’s such a dark shell. What is happening? 3 chicks have hatched. I put it in an unsealed bag just in case.

 

[casportpony]

Welcome to BYC! Be very careful, that might be an exploded. Can you get a brighter light to candle it with?