Twelfth House
What runs underneath — solitude, the unconscious, and what undoes you quietly.
The twelfth house is the last one and the hardest to see: what happens out of sight, including from yourself. Sleep, retreat, institutions, long illness, hidden work, and the self-defeating patterns that operate below the level of decision.
Its reputation is grim and half-earned. It is also the house of contemplation and of everything done for reasons that never need to be public. Planets here are not weakened so much as private — they work, but rarely where anyone can watch.
Directly across the wheel is the sixth house. Opposite houses work as a pair — what is emphasised in one is usually being answered for in the other.
Which planets fall in your own twelfth house depends on your birth time to the minute. Cast the chart — free, and it will tell you honestly if the time you have isn't enough to place them.