over spring break, we took an amazing trip to tulum in the yucatan region of mexico. it was amazing! we visited the mayan ruins in tulum and chichen itza and toured the sia ka'an biosphere reserve. we swam in cenotes; sinkholes resulting from the collapse of the limestone bedrock that exposes the groundwater underneath. we even explored an underground - and underwater - cave. the town of tulum itself is quaint and picturesque. i am working up various reasons for returning asap.