A wall designed using VIBR with a tmp2 of 1, for increased resiliance, along with MERC and QRTZ with a high TMP value. Once the VIBR turns blue and then back to green again, it will act like normal VIBR again, with a tmp2 of 0.
A large quantity of PLUT is all it takes to break this wall... (Seriously, I flood-filled the area above the wall with PLUT, then applied enough air pressure to get some NEUTs.)