bowling field, ischigualasto national and jurasic park, moon valley, san juan, argentina. world heritage site, and a major

bowling field ischigualasto national jurasic park moon valley juan argentina world heritage site major touristic destination rock formation desert arid sand soil geology asphalt flooring stonewall gravel wall boulder pebble sea wood rubble wildlife floor food cobblestone argentina estimated geological formations 200 250 million years old one important triassic geological-jurasic palaeontological sites world