The odds of hanging on are great, especially if you keep up to date on advances in technology. More and more archaeologists use fancy gizmos like Geographical Information Systems (GIS), GPS, satellite imagery, and ground penetrating radar. Imagine being able to get an idea of what’s below the surface before you dig. The future is here.
To stay relevant in your position, it’s up to you to be nerdy. I mean really keep tabs on what’s happening in your field.