Reference for Parah 3:6

וְכֶבֶשׁ הָיוּ עוֹשִׂים מֵהַר הַבַּיִת לְהַר הַמִּשְׁחָה, כִּפִּין עַל גַּבֵּי כִפִּין, וְכִפָּה כְנֶגֶד הָאֹטֶם, מִפְּנֵי קֶבֶר הַתְּהוֹם, שֶׁבּוֹ כֹהֵן הַשּׂוֹרֵף אֶת הַפָּרָה, וּפָרָה וְכָל מְסַעֲדֶיהָ, יוֹצְאִין לְהַר הַמִּשְׁחָה:

And they would make a ramp from the temple mount to the mount of anointing [the Mount of Olives], arches on top of arches, and [hollow] domes over the foundations, because of graves of the deep, for on it the priest who would burn the heifer, and the heifer and all its helpers would leave to the mount of anointing.

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