I am in the tunnel (tube) between first base and Satelite communication base. At the beginning of this tunnel I turned left, there is a small place with boxes. Go beside the boxes on the right side. At the right side from the second box there is an ivisible whole in the floor where you can fall through. When you pass this whole you can see Penkure from an lower level 😉

Penkura Midway Branch 0.2.0 MW 5

Development Comment:
Thank you for the report, collision is fixed and will be available in Penkura MW 6.1, an incredible find.