Absolutely. Imho, there are a couple of different directions we can take in exploring reality via contemplation. The direction of (for lack of a better term) purification/egolessness is emphasized by Buddhist schools. An orthogonal direction might be the age-old practice of shamanism, in which engagement with wild realms of the spiritual Outback is sought, for the purposes of healing and exploration.

Sorry to keep shilling for Shinzen Young, but he is one of the few authors who has legitimacy in traditional Buddhist lineages, but seems interested in exploring and systematizing alternate traditions.

You might find his thoughts on shamanism interesting: https://www.youtube.com/watch?v=33u14OjeHpE