al of Jilin Agricultural University (吉林农业大学学报), 2008,30(4):506 - 510 (in Chinese) [6] Sun B (孙 斌),Qu W-J (瞿伟菁),Zhang X-L (张 晓玲),et al. Investigation on inhibitory and apoptosis- inducing effects of s...
Overnight camping at Caracol will be allowed for the first time, allowing winter solstice campers the chance to witness the sun rise on a new B'ak'tun (or cycle) from a very historical spot.