Formerly, the title was "Paradise Snarked & Marked". But Jean-Michel Frodon's comment is so much better! (He also explained quite well, what this image is about.)
The comparison shows illustrations by Gustave Doré (to John Milton's Paradise Lost, Book VI, 1866) and by Henry Holiday (to The Hunting of the Snark, 1876).
High resolution: 4440 x 3000. There also is an image without the blueish resemblance indication.
From The Hunting of the Snark, Fit the 5th, The Beaver's Lesson:
301 They sought it with thimbles, they sought it with care;
302 They pursued it with forks and hope;
303 They threatened its life with a railway-share;
304 They charmed it with smiles and soap.
305 Then the Butcher contrived an ingenious plan
306 For making a separate sally;
307 And had fixed on a spot unfrequented by man,
308 A dismal and desolate valley.
309 But the very same plan to the Beaver occurred:
310 It had chosen the very same place:
311 Yet neither betrayed, by a sign or a word,
312 The disgust that appeared in his face.
313 Each thought he was thinking of nothing but "Snark"
314 And the glorious work of the day;
315 And each tried to pretend that he did not remark
316 That the other was going that way.
317 But the valley grew narrow and narrower still,
318 And the evening got darker and colder,
319 Till (merely from nervousness, not from goodwill)
320 They marched along shoulder to shoulder.
The two images also walk along well together. The comparison is a good example for how Holiday in many of his references to other images strengthened the link between an illustration and the pictures from which he quoted graphical elements: The resemblance of the 6 matching patterns (highlighted using notes 1 to 6) may be more or less disputable for each single match, but the topological relation between the elements quoted (in a subtle and yet noticeable manner) by Holiday is similar in both pictures.
I made this comparison in 2009 based on original 19th century prints.