I think manipulation is an integral part of a free market. Every single crypto market has whales who control the price, even BTC. So these walls can be considered not only as "impenetrable price restriction" but also as a big player/investor wanting to buy or sell. They won't remain so impenetrable if BTC decides to move to $1000 or $100. They'll be either eaten or pulled.
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True enough. Well, I've got my popcorn, curiously watching what happens between the two walls. There's 2657 Dash to the 0.013 buy wall, and 7424 Dash to the 0.015 sell wall. Bitcoin recovered from its dip yesterday and is still in a bull pennant. Let the games begin!