Ludicrous Obstacles

Open Beta development has a chaotic and fascinating beauty, weeks ago I sent some of the AccrO footage to quadcopter groups and pilots and received some weird but astonishing fun suggestions, that I translated into new obstacles that are being inserted in the growing map. Two that I like to mention now are the "psychedelic geode" and the "knife-edge loop". I am testing more ideas and it would be awesome to receive your ideas for ludicrous obstacles! Many thanks for the awesome support!
https://youtu.be/J_xrA8F7q9E
https://store.steampowered.com/app/1366810/AccrO/