rocks17_2		grass1.tga		5.0	1.0	1.8	1
-0sand		        grass2.tga		2.0	1.6	2.5	2
out_mud1		grass1.tga		5.0	0.5	0.8	1
out_grvl2b		grass1.tga		5.0	1.0	1.8	1
out_grvl2		grass1.tga		5.0	1.0	1.8	1
out_grvl3		grass1.tga		3.0	1.0	1.8	1