Where does “Pedregal” come from?

Pedregal (Tagalog) comes from Spanish pedregal, from Spanish piedra, from Old Spanish piedra, from Latin petra, from Ancient Greek πέτρα — rock formation: cliff, ledge, cave, ridge; stone.

Ancestry of “Pedregal”, step by step

Step	Language	Word	Meaning
1	Spanish	pedregal	a place or region with rocky terrain; lava field
2	Spanish	piedra	stone; flint; hailstone
3	Old Spanish	piedra	A piece of stone; a rock or pebble
4	Latin	petra	stone, rock
5	Ancient Greek	πέτρα	rock formation: cliff, ledge, cave, ridge; stone

Every word from Ancient Greek πέτρα →Every word from Latin petra →Every word from Old Spanish piedra →