Kena Bridge Of Spirits is an action-adventure game developed by Ember Lab. After freeing the Taro spirit, you will come back to the village shrine. There the old spirit will tell you to help the woodsmith by giving you her mask. You need to visit the field area to be able to free her spirit but before that, you will enter the storeroom where you will get the bomb ability from Hana.
You need to use the bomb ability on the old technology to open the door to the field. Below you will find a walkthrough on how to use the bomb on an old technology pillar and open the door.
Kena Bridge Of Spirits How To Open Old Technology Door
Once you get the bomb ability go to the middle area of the room and on the left side, you will few rocks glowing. Use your bomb on them and then hit the crystal on the rock to turn it. Then climb the left side area and go backside to find a hole that leads to the basement.
Slide through that hole and there you have to defeat corrupted enemies and clear the corruption to unlock the path for the left side old technology pillar. Now you have access to both side pillars on which you have to use your bomb ability. Once they are activated you need to hit the crystal areas with your arrow to turn them.
Keep rotating the parts till they start glowing and once all the parts start to glow wait for it to settle down. Once the pillar is settled it will direct the energy towards the door. Repeat the same with the other side pillar and then use your light burst in front of the door to open it.