Pellucidar is accessible to the surface world via a polar opening permitting passage between the inner and outer worlds, through which a rigid airship visits in the third book of the series.
Through that hole a rigid airship visits in the third book of the series. Pellucidar is accessible to the surface world via a polar opening allowing passage between the inner and outer worlds.
Pellucidar is accessible to the surface world via a polar opening allowing passage between the inner and outer worlds. Through that hole a rigid airship visits in the third book of the series.
Pellucidar is accessible to the surface world via a polar opening allowing passage between the inner and outer worlds. Through that hole a rigid airship visits in the third book of the series.