Taking psychedelics in nature has always been more affective than in an unnatural habitat or indoors ime. For me, i think it has something to do with all the distractions of the town/city/etc. I find that in nature, everything seems to flow together, and not a separated, sterile landscape. Similar to what you are describing with blocked energies, i seem to think its more a over-amplification of some energies we have that block out more subtle energies. In nature you have the option to let go of everything else, faced with an immense web of interconnected, balanced energies present in an ecosystem. This helps immensely with meditation for me, which i find is the only real way to get the therapeutic work done with psychs.
Its almost like nature itself is teaching you through the understanding the ways different forms of life interact with each other, and applying these natural principles of balance to your daily life reaps bountiful rewards. Its playing the metaphorical game, trying to understand the systhastetic mental poetry that come up under the influence of psychedelics.
Just find a beautiful place to sit, bring a few essential supplies, and make sure you won't be distracted by other people, cars, etc. Some of my most profound realizations have come from a special place i go, about 2 miles from where i live. It feels very sacred, and there's evidence of Native American activity (arrowheads) just 300m from this special spot. It just feels more alive than the forest around this rock formation. Esoteric or not, its important to me.
"let those who have talked to the elves, find each other and band together" -TMK
In a society in which nearly everybody is dominated by somebody else's mind or by a disembodied mind, it becomes increasingly difficult to learn the truth about the activities of governments and corporations, about the quality or value of products, or about the health of one's own place and economy.
In such a society, also, our private economies will depend less upon the private ownership of real, usable property, and more upon property that is institutional and abstract, beyond individual control, such as money, insurance policies, certificates of deposit, stocks, etc. And as our private economies become more abstract, the mutual, free helps and pleasures of family and community life will be supplanted by a kind of displaced citizenship and by commerce with impersonal and self-interested suppliers...
The great enemy of freedom is the alignment of political power with wealth. This alignment destroys the commonwealth - that is, the natural wealth of localities and the local economies of household, neighborhood, and community - and so destroys democracy, of which the commonwealth is the foundation and practical means.” - Wendell Berry