<P> In 1993, measures were taken to prevent erosion . The original trackway was remolded and new casts were made . As the trackway is very fragile, the new replica cast was used to guide re-excavation in the field . A team of specialists, one being Fiona Marshall, re-excavated half of the trackway to record its condition, stabilize the surface, extract dead roots and rebury it with synthetic geotextile materials . This allows the trackway surface to breathe, and protects it against root growth . </P> <P> Proposals for lifting the track and moving it to an enclosed site have been suggested, but the cost is viewed as outweighing the benefits: the process would require much research, a large amount of money, and there is a risk of loss or damage . Thus, burial seems to be the most effective method of preservation . </P>

What was significant about the laetoli site in tanzania