ravine

geological feature

Learn about this topic in these articles:

In valley: Valley evolution in Hawaii
…streams incise to form V-shaped ravines. The ravine systems eventually become sufficiently deep to expose deeper layers where groundwater activity and spring sapping become more important. The deepest incision produces U-shaped, theatre-headed valleys. Because the layered basalt flows are most permeable parallel to dip, there is efficient groundwater movement toward…
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