Volcanic rock structures Yellowstone by Sjaak den Breeje

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60 x 30 cm 60 cm width, 30 cm height Current 70 x 35 cm 70 cm width, 35 cm height Current 80 x 40 cm 80 cm width, 40 cm height Current 90 x 45 cm 90 cm width, 45 cm height Current 100 x 50 cm 100 cm width, 50 cm height Current 110 x 55 cm 110 cm width, 55 cm height Current 120 x 60 cm 120 cm width, 60 cm height Current 130 x 65 cm 130 cm width, 65 cm height Current 140 x 70 cm 140 cm width, 70 cm height Current 145 x 75 cm 145 cm width, 75 cm height Current 150 x 75 cm 150 cm width, 75 cm height Current 155 x 80 cm 155 cm width, 80 cm height Current 160 x 80 cm 160 cm width, 80 cm height Current 165 x 85 cm 165 cm width, 85 cm height Current 170 x 85 cm 170 cm width, 85 cm height Current 175 x 90 cm 175 cm width, 90 cm height Current 180 x 90 cm 180 cm width, 90 cm height Current 185 x 95 cm 185 cm width, 95 cm height Current 190 x 95 cm 190 cm width, 95 cm height Current 195 x 100 cm 195 cm width, 100 cm height Current 200 x 100 cm 200 cm width, 100 cm height Current 205 x 105 cm 205 cm width, 105 cm height Current 210 x 105 cm 210 cm width, 105 cm height Current 215 x 110 cm 215 cm width, 110 cm height Current 220 x 110 cm 220 cm width, 110 cm height Current 225 x 115 cm 225 cm width, 115 cm height Current 230 x 115 cm 230 cm width, 115 cm height Current 235 x 120 cm 235 cm width, 120 cm height Current 240 x 120 cm 240 cm width, 120 cm height Current 245 x 125 cm 245 cm width, 125 cm height Current 250 x 125 cm 250 cm width, 125 cm height Current 260 x 130 cm 260 cm width, 130 cm height Current 270 x 135 cm 270 cm width, 135 cm height Current 280 x 140 cm 280 cm width, 140 cm height Current 290 x 145 cm 290 cm width, 145 cm height Current 300 x 150 cm 300 cm width, 150 cm height Current 310 x 155 cm 310 cm width, 155 cm height Current 320 x 160 cm 320 cm width, 160 cm height Current 330 x 165 cm 330 cm width, 165 cm height Current 340 x 170 cm 340 cm width, 170 cm height Current 350 x 175 cm 350 cm width, 175 cm height Current 360 x 180 cm 360 cm width, 180 cm height Current 370 x 185 cm 370 cm width, 185 cm height Current 380 x 190 cm 380 cm width, 190 cm height Current 390 x 195 cm 390 cm width, 195 cm height Current 400 x 200 cm 400 cm width, 200 cm height Current 410 x 205 cm 410 cm width, 205 cm height Current 420 x 210 cm 420 cm width, 210 cm height Current 430 x 215 cm 430 cm width, 215 cm height Current 440 x 220 cm 440 cm width, 220 cm height Current 435 x 225 cm 435 cm width, 225 cm height Current 450 x 225 cm 450 cm width, 225 cm height Current 445 x 230 cm 445 cm width, 230 cm height Current 460 x 230 cm 460 cm width, 230 cm height Current 455 x 235 cm 455 cm width, 235 cm height Current 470 x 235 cm 470 cm width, 235 cm height Current 465 x 240 cm 465 cm width, 240 cm height Current 480 x 240 cm 480 cm width, 240 cm height Current 475 x 245 cm 475 cm width, 245 cm height Current 490 x 245 cm 490 cm width, 245 cm height Current 485 x 250 cm 485 cm width, 250 cm height Current 500 x 250 cm 500 cm width, 250 cm height Current 495 x 255 cm 495 cm width, 255 cm height Current 510 x 255 cm 510 cm width, 255 cm height Current 505 x 260 cm 505 cm width, 260 cm height Current 520 x 260 cm 520 cm width, 260 cm height Current 515 x 265 cm 515 cm width, 265 cm height Current 530 x 265 cm 530 cm width, 265 cm height Current 525 x 270 cm 525 cm width, 270 cm height Current 540 x 270 cm 540 cm width, 270 cm height Current 535 x 275 cm 535 cm width, 275 cm height Current 550 x 275 cm 550 cm width, 275 cm height Current 545 x 280 cm 545 cm width, 280 cm height Current 560 x 280 cm 560 cm width, 280 cm height Current 555 x 285 cm 555 cm width, 285 cm height Current 570 x 285 cm 570 cm width, 285 cm height Current 565 x 290 cm 565 cm width, 290 cm height Current 580 x 290 cm 580 cm width, 290 cm height Current 575 x 295 cm 575 cm width, 295 cm height Current 590 x 295 cm 590 cm width, 295 cm height Current 585 x 300 cm 585 cm width, 300 cm height Current 600 x 300 cm 600 cm width, 300 cm height Current