  We argue that the notion of entanglement in de Sitter space arises naturally
from the non-trivial Lorentzian geometry of the spacetime manifold, which
consists of two disconnected boundaries and a causally disconnected interior.
In four bulk dimensions, we propose an holographic description of an inertial
observer in terms of a thermofield double state in the tensor product of the
two boundaries Hilbert spaces, whereby the Gibbons--Hawking formula arises as
the holographic entanglement entropy between the past and future conformal
infinities. When considering the bulk entanglement between the two causally
disconnected Rindler wedges, we show that the corresponding entanglement
entropy is given by one quarter of the area of the pair of codimension two
minimal surfaces that define the set of fixed points of the dS$_4/\mathbb Z_q$
orbifold.
